The discrepancy in how much a person can lift on Earth and in Mars is due to the difference in the acceleration due to gravity in both planets.
Dependence of Weight on the Acceleration due to GravityAlthough, the physical Quantity, mass is always constant as it is a measure of the quantity of matter in a body. The weight on the other hand is a function of the acceleration due to gravity and hence is different in different planets.
On this note, it follows that a person can carry 270kg mass on earth and 440kg mass on Mars.
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2K(5) + Cl2(g) → 2KCI(S)
what type of chemical reaction is this
Answer:
Synthesis Chemical Reaction
Explanation:
A+B -> AB
A gas has a pressure of 100 kPa, a volume of 43.2 mL at a temperature of 19 C. What will be is volume is the pressure is changed to 101.3 kPa at 0 C?
Answer:
100=43.2
101.3=x
100x=101.3×43.2
100x=4376.16
x=4376.16/100
x=43.7616
How many atoms are present in h3po4
Answer:
3
Explanation:
The molar mass is obtained by adding up the average atomic masses of these atoms: Molar mass H3PO4 = 3(1.008 g) + 1(30.97 g) + 4(16.00 g) = 97.99 g.
If 8.63 grams of Aluminum oxide react with Nitric acid, how many grams of water will be produced?
Taking into account the reaction stoichiometry, 4.57 grams of H₂O are formed when8.63 grams of Al₂O₃ reacts with HNO₃.
Reaction stoichiometryIn first place, the balanced reaction is:
Al₂O₃ + 6 HNO₃ → 2 Al(NO₃)₃ + 3 H₂O
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
Al₂O₃: 1 mole HNO₃: 6 moles Al(NO₃)₃: 2 molesH₂O: 3 molesThe molar mass of the compounds is:
Al₂O₃: 102 g/moleHNO₃: 63 g/moleAl(NO₃)₃: 213 g/moleH₂O: 18 g/moleThen, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:
Al₂O₃: 1 mole ×102 g/mole= 102 gramsHNO₃: 6 moles ×63 g/mole= 378 gramsAl(NO₃)₃: 2 moles ×213 g/mole= 426 gramsH₂O: 3 moles ×18 g/mole= 54 gramsMass of water formedThe following rule of three can be applied: if by reaction stoichiometry 102 grams of Al₂O₃ form 54 grams of H₂O, 8.63 grams of Al₂O₃ form how much mass of H₂O?
[tex]mass H_{2} O=\frac{8.63 grams of Al_{2} O_{3} x54 grams of H_{2} O}{102 grams of Al_{2} O_{3}}[/tex]
mass of H₂O= 4.57 grams
Then, 4.57 grams of H₂O are formed when8.63 grams of Al₂O₃ reacts with HNO₃.
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There are 100 mg of caffeine in a shot of espresso. The chemical formula
for caffeine is C8H10N402. How many moles of carbon are present in the
caffeine in a shot of espresso?
there are 8 moles of carbon in the molecule because the ratio of carbon per the whole caffine molecule is 8 carbon atoms: 1 molecule of caffine so in terms of moles that's 8:1 :)
Answer:
Solve a problem with the first 100th on my phone and the phone is a bit annoying and I have to use it to get the battery back.
Diuris are common orchids found in Australia. The flowers of this species display a large number of variations in color and markings. Insects rely on the ability to learn the specific colors and markings of unfavorable flowers to avoid them in the future.
How is the variation in color and markings beneficial to the orchid plant?
From what we know, we can confirm that the variations in colors are a mechanism intended to protect the plants from predators.
Why is color a protection mechanism?This can be observed throughout nature. Many poisonous organisms have evolved bright colors intended to be noticed. Over time, this has resulted in many predators avoiding prey with bright colors, in order to avoid the possibility of being poisoned.
Therefore, we can confirm that the variations in colors are likely a mechanism intended to protect the plants from predators.
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explain why a luminous flame of a Bunsen burner produces bright yellow light
Answer:
because of the small soot particles
Answer:
is due to small soot particles in the flame which are heated to incandescence or the shortage of combustion air .
Which has greater kinetic energy, a car going 30 mph or one going 40 mph energy?
Explain anaerobic respiration with yeast in your own words
Answer:
Anaerobic respiration takes place in the absence of oxygen.
Anaerobic respiration in yeast is used during brewing and bread-making.
Explanation:
glucose → ethanol + carbon dioxide.
C 6H 12O 6 → 2C 2H 5OH + 2C0 2.
A chemist makes a solution of naoh for use in an experiment. she dissolves 0.00500 mol naoh in 1.00 l h2o. the naoh completely dissociates to form a solution with [oh− ] = 0.00500 m. what is the poh of this solution? 0.00500 5.00 2.30 –2.30
-2.30 is the pOH of the NaOH solution.
How pOH is calculated?pOH of any solution is define as the negative logarithm of the concentration of OH⁻ ion present in the solution, and it is represented as:
pOH = -log[OH⁻]
In the question it is given that solution is made from NaOH and NaOH is completely dissociate in the solution. So, the concentration of OH⁻ ion is equal to the concentration of NaOH.
Concentration of NaOH will be calculated in the terms of molarity as:
M = n/V, where
n = moles of NaOH = 0.005 mole
V = volume of NaOH = 1 L
M = 0.005/1 = 0.005 M
So, concentration of OH⁻ ion = 0.005 M
Value of pOH will be calculated as:
pOH = -log(0.005) = -2.30.
Hence, option (4) is correct i.e. -2.30.
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Answer:
The answer is c
Explanation:
2.30
2. How many grams of water would be produced if 20.0 liters of oxygen were burned at a temperature of
-10.0"C and a pressure of 1.3 atm?
The mass of water H₂O that would be produced from the reaction is 43.2 g
How to determine the mole of oxygen Volume (V) = 20 LTemperature (T) = –10 ˚C = –10 + 273 = 263 KPressure (P) = 1.3 atmGas constant (R) = 0.0821 atm.L/Kmol Number of mole (n) =?
The number of mole can be obtained as by using the ideal gas equation as illustrated below:
n = PV / RT
n = (1.3 × 20) / (0.0821 × 263)
n = 1.2 mole
How to determine mole of waterBalanced equation
2H₂ + O₂ → 2H₂O
From the balanced equation above,
1 mole of O₂ reacted to produce 2 moles of H₂O.
Therefore,
1.2 mole of O₂ will react to produce = 1.2 × 2 = 2.4 moles of H₂O
How to determine the mass of water produced Mole of H₂O = 2.4 moles Molar mass of H₂O = (2×1) + 16 = 18 g/mol Mass of H₂O =?Mass = mole × molar mass
Mass of H₂O = 2.4 × 18
Mass of H₂O = 43.2 g
Thus, 43.2 g of water were produced from the reaction.
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Answer:
15.6g ofH2O
Explanation:
The Rock Shown is Made of Light and Dark Mineral Crystals that are Evenly Distributed.
Which phrase describes the most likely
environment in which this rock formed?
A. Very High Temperature and Pressure
B. Very Low Temperature and Pressure
C. Very Low Temperature and Very High Pressure
D. Very High Temperature and Very Low Pressure
Answer:
It Is A
Explanation:
I took the test and that was the answer
Answer:
high tmp and pressure
Explanation:
Copper metal (Cu) reacts with silver nitrate (AgNO3) in aqueous solution to form Ag and Cu(NO3)2. The balanced chemical equation is shown below. Cu 2AgNO3 Right arrow. Cu(NO3)2 2Ag The molar mass of Cu is 63. 5 g/mol. The molar mass of Ag is 107. 9 g/mol. What mass, in grams, of Ag is produced from a reaction of 31. 75 g of Cu? 26. 95 grams 107. 9 grams 215. 91 grams 431. 82 grams.
107.9 g of Ag is produced from a reaction of 31. 75 gram of Copper.
How we calculate mass from the moles?Mass of any substance will be calculated from its moles as:
n = W/M, where
W = required mass
M= molar mas
Given chemical reaction is:
Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag
From the stoichiometry of the reaction, it is clear that:
1 mole of Cu = produce 2 moles of Ag
Given mass of Cu = 31.75g
Molar mass of Cu = 63.5g/mol
Moles of Cu = 31.75g / 63.5g/mol = 0.5 moles
0.5 moles of Cu = produce 2×0.5 = 1 mole of Ag
Molar mass of Ag = 107.9g/mol
Required mass of Ag = 1mol × 107.9g/mol = 107.9 g
Hence, option (2) is correct i.e. 107.9 g of Ag is produced.
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Pls help me im drowned !!!
Hydrochloric acid isa acid so color is red .
#2
Here is the balanced equation
[tex]\\ \rm\Rrightarrow Na_2CO_3+2HCl\longrightarrow 2NaCl+H_2CO_3[/tex]
1 mol Na_2CO_3 takes 2mol HCL
16.2cm^3=0.016L1mol is 22.4L
moles of Na_2CO_3:-
0.016(22.4)=0.36molMoles of HCl=0.36(2)=0.72mol
Which stimulus is an example of an internal stimulus?
A. an artificial light that attracts insects
B. an increase in the amount of water available to a plant
C. a decrease in oxygen levels in the blood during exercise
D. a sudden change of air temperature
An example of an external stimulus is a decrease in oxygen levels in the blood during exercise.
Option C
What is stimulus?A stimulus is defined as a thing or sensation that causes a specific reaction in an organ or tissue of a living organism
There are two types of stimuli:
Internal stimulusExternal stimulusLearn more about stimulus:
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Answer:
An example of an external stimulus is a decrease in oxygen levels in the blood during exercise.
Option C
What is stimulus?
A stimulus is defined as a thing or sensation that causes a specific reaction in an organ or tissue of a living organism
There are two types of stimuli:
Internal stimulus
External stimulus
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Explanation:
two lamps (with a resistance of 10 Ohms each) are connected in a series circuit and are supplied with 100- volts of power. which of the following statements are true of the voltage that each lamp receives
a. Each lamp will recieve 50 volts
B. Each lamp will recieve 100 volts
C. The first lamp will recieve more voltage than the second lamp
Answer:
A
Explanation:
Each lamp has the same resistance of 10 ohms thus the voltage drop will be equal. In a series circuit, the Current, (I) is the same because it does not divide anywhere thus Voltage will vary with resistance.
The two lamps (with a resistance of 10 Ohms each) are connected in a series circuit and are supplied with 100- volts of power. The statements are true if the voltage that each lamp receives is each lamp will receive 50 volts. Therefore, option A is correct.
What do you mean by resistance ?The term resistance is defined as a measure of the opposition to current flow in an electrical circuit. Resistance is quantified in ohms, symbolized by the Greek letter omega (Ω).
Electric current relates to the flow of electrons. An easier way to state resistance is to consider an example of a person in a crowded market struggling to go from one shop to another.
Every lamp has the same resistance of 10 ohms thus the voltage drop will be the same. In a series circuit, the Current, (I) is the equal because it does not divide anywhere thus Voltage will vary with resistance.
Thus, option A is correct.
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Common observations of a chemical reaction are described in the Introduction section. For each observation, name a common or everyday occurrence that must involve a chemical reaction.
Look at pic, need it asap!
Answer:
12x+4x-7y+45b+78a-44b+1a+1z+0d+1.1a+1.1a
Gases that are abundantly emitted by volcanoes include ________. Group of answer choices helium carbon dioxide water vapor sulfur dioxide or hydrogen sulfide
Answer:
Water vapour (more than 60%)
Rank the following in order from the most energy released to the least energy released:________.
(a) uranium-235 splitting into two equal fragments,
(b) uranium-235 splitting into three equal fragments,
(c) uranium-235 splitting into 92 equal fragments.
Rank from most to least. To rank items as equivalent, overlap them.
A
B
C
The ranking is uranium-235 splitting into 92 equal fragments, three equal fragments, and two equal fragments. It also releases radiation.
What is nuclear fission?Nuclear fission refers to a natural chemical reaction where an atom nucleus splits into two or more fragments.
This process (nuclear fission) is well known to release huge amounts of energy and radiation.
The more will be the number of atomic fragments, the more will the energy and radiation released by the process of nuclear fission.
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1. Which option correctly describes the reactants and products of a chemical reaction?A The mass of the reactants must be equal to the mass of the products. The total number of moles of the reactants can be more or less than the total number of moles of the products.
B The mass of the reactants can be more or less than the mass of the products. The total number of moles of the reactants must be equal to the total number of moles of the products.
C The mass of the reactants can be more or less than the mass of the products. The total number of moles of the reactants can also be more or less than the total number of moles of the products.
D The mass of the reactants must be equal to the mass of the products. The total number of moles of the reactants must also be equal to the total number of moles of the products.
The statement which correctly describes the reactants and products of a chemical reaction is: A. The mass of the reactants must be equal to the mass of the products. The total number of moles of the reactants can be more or less than the total number of moles of the products.
What is LOCOM?LOCOM is an abbreviation for the law of conservation of mass and it states that mass is neither created nor destroyed in any chemical reaction. Thus, the mass of any substance in a balanced chemical equation would remain the same at the end.
According to the law of conservation of mass (LOCOM), the mass of all the reacting chemical elements of any substance (reactants) must be equal to the mass of the product formed during a chemical reaction.
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Calcium hydroxide and phosphoric acid react to form calcium phosphate and
water
Answer:
if you are asking for the chemical reaction:
Ca(OH)2 + H3PO4-------> Ca3(PO4)2 + H2O
Explanation:
In this reaction, phosphoric acid, H3PO4 , a weak acid, will react with calcium hydroxide, Ca(OH)2 , a strong base, to produce calcium phosphate, Ca3(PO4)2 , an insoluble salt, and water.
9. When you move your hand from a hot stove what is the stimulus you are reacting to?
Answer:
if you touch a hot stove, the nerves in your skin shoot a message of pain to your brain. The brain then sends a message back telling the muscles in your hand to pull away.
Explanation:
Calculate how many grams of hydrogen can be burned if the limiting factor is 40 liters of oxygen at 200 K and 1 atm.
Since oxygen is the limiting factor of the reaction, 7.14 g of hydrogen is required to react with 40 litres of oxygen.
What is the limiting factor in a reaction?The limiting factor in a reaction is that factor which the reaction depends on in order to proceed.
Once the limiting factor in a reaction is absent, the reaction will stop.
In the reaction between hydrogen and oxygen, twice the volume of hydrogen is required to react with oxygen.
In the given reaction, oxygen is the limiting factor.
Volume of oxygen = 40 litres
Volume of hydrogen required = 40 × 2 = 80 litres
Mass of 22.4 L of hydrogen = 2.0 g
Mass of 80 Litres = 80/22.4 × 2.0 g
Mass of hydrogen = 7.14 g
Therefore, 7.14 g of hydrogen is required to react with 40 litres of oxygen.
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2Ag(s) + S(s) -> Ag2S(s)
If we used 0.7 moles Ag and 0.312 moles S, would Ag be the limiting reactant?
Answer:
Sulphur
Explanation:
Sulphur because we been 2 ag for 1 s therefore 0.312 S will need 0.624 of Ag
Ag is not the limiting reactant in this case. The limiting reactant is determined by the reactant that is completely consumed first, and in this case, it is S.
To determine the limiting reactant, we need to compare the moles of each reactant to the stoichiometric ratio of the balanced equation. The balanced equation for the reaction is:
2Ag(s) + S(s) →Ag₂S(s)
According to the balanced equation, the stoichiometric ratio between Ag and S is 2:1. This means that 2 moles of Ag react with 1 mole of S to produce 1 mole of Ag₂S.
Given:
Moles of Ag = 0.7 moles
Moles of S = 0.312 moles
To determine if Ag is the limiting reactant, we need to compare the moles of Ag to the stoichiometric ratio.
Moles of Ag / Stoichiometric coefficient of Ag = 0.7 moles / 2 = 0.35 moles
Comparing this value to the moles of S, we can see that 0.35 moles of Ag is less than 0.312 moles of S. Therefore, Ag is not the limiting reactant in this case. The limiting reactant is determined by the reactant that is completely consumed first, and in this case, it is S.
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At a certain temperature and pressure, 1 L of CO2 gas weighs 1.55 g. What is the mass of 1 L of N2 gas at the same temperature and pressure
Answer:Set up a proportion os V1/n1 = V2/n2. V is the volume, n is the amount in MOLES, not grams. Convert the CO_2 to moles, then solve and find that the amount of N_2 should be the same amount of moles. Then use the molar mass of N_2 (28.02 grams/mole) to convert that amount of moles into grams. That's your answer.
Explanation:
how many atoms are in 10.0 moles of titanium
Calculate the pH during the titration of 20.00 mL of 0.1000 M dimethylamine, (CH3)2NH(aq), with 0.1000 M HCl(aq) after 21.23 mL of the acid have been added.
The pH value of the solution is mathematically given as
pH=2.35
What pH value of the solution?Question Parameters:
pH during the titration of 20.00 mL of 0.1000 M dimethylamine,
with 0.1000 M HCl(aq) after 21.23 mL of the acid
Generally, the equation for the Chemical Reaction is mathematically given as
(CH3)2NH(aq), +Hcl ---> <---- (CH3)2NH2Cl(aq)
Therefore
[tex]HCl=\frac{0.186mol}{41.86}[/tex]
HCL=0.00444M
WHere
HClaq--->H+(aq)+Cl-(aq)
Hence
H+=0.00444M
pH= -log{H+}
pH=log(0.00444)
pH=2.35
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what type of bond is present in a copper wire
Answer:
the correct answer is Metallic bonding
Explanation:
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An induced dipole-dipole interaction has been proposed between aromatic amino acid residues present in the cholinergic binding site and acetylcholine. What functional group of acetylcholine is involved?
a) the acyl methyl group.
b) the ester.
c) the ethylene bridge.
d) the quaternary ammonium head group.
Answer:
hi-
Explanation:
interaction with acetylcholine?
Aspartic acid 311
10) What amino acid in the binding site of the cholinergic receptor is involved in an ionic interaction with acetylcholine? Feedback: Aspartic acid 311 is ionised and is present in the binding site as a negatively charged aspartate ion.
4.
Which series is in order of increasing boiling point?
A. CH2CH2CH3OH CH3COCH3 CH3CH2CH3
B. CH3CH2CH3 CH3COCH3 CH2CH2CH3OH
C. CH3COCH3 CH2CH2CH3OH CH3CH2CH3
D. CH3CH2CH3 CH2CH2CH3OH CH3COCH3
The series which is in order of increasing boiling point is CH3CH2CH3 CH3COCH3 CH2CH2CH3OH
However, the boiling point of an organic substance is the temperature at which the vapor pressure of the liquid organic substance equals the pressure surrounding the liquid and the liquid changes into a vapor.
What are organic compounds?Organic compounds are substance containing carbon and hydrogen. Some few organic compounds include:
AlkanesAlkenesAlkynesAlkanolsAlkanalsAlkanonesEstersAminesSo therefore, the series which is in order of increasing boiling point is CH3CH2CH3 CH3COCH3 CH2CH2CH3OH
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