Answer:
Yttrium, Carbon, Iodine
Explanation:
Y stands for Yttrium
C stands for Carbon
I stands for Iodine
and 3 stands for 3 Iodine atoms
What is the molar mass of CH 4 ? (C = 12.01g / m * o * l, H = 1.008g / m * o * l)
Which index fossil is most likely to be found in
the Allegheny Plateau?
Answer:
amphibians
Explanation:
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What other small steps can we take to save water ?
Answer:
Check your toilet for leaks. ...
Stop using your toilet as an ashtray or wastebasket. ...
Put a plastic bottle in your toilet tank. ...
Take shorter showers. ...
Install water-saving shower heads or flow restrictors. ...
Take baths. ...
Turn off the water while brushing your teeth. ...
Turn off the water while shaving.
Explanation:
Answer:
keeping the water clean
Explanation:
avoid dumping rubish in the water
pleeeassee
Carbon has unique bonding characteristics that allow it to
A
form ionic bonds with any atom to form many different molecules.
B
resist bonding with other atoms and remain a pure element.
C
form chains or rings by bonding to itself and other atoms.
D
form ionic salts that make up half of the known salts on Earth.
A functional group is a specific arrangement of atoms in an organic compound that is acmpavle if characteristic reactions
Is this True or false
Does not having the word (chemical )before reactions make it false
Please help i would appreciate it
Explanation:
(a) a functional group is a special group of atoms or bonds in a compound that is responsible for the chemical reactions, behavior, and characteristics of that compound. (b) Functional group is present in both the compound is alcohol (-OH).
Functional groups are specific groupings of atoms within molecules that have their own characteristic properties, regardless of the other atoms present in a molecule. Common examples are alcohols, amines, carboxylic acids, ketones, and ethers.
Key Points
Functional groups are often used to “functionalize” a compound, affording it different physical and chemical properties than it would have in its original form.
Functional groups will undergo the same type of reactions regardless of the compound of which they are a part; however, the presence of certain functional groups within close proximity can limit reactivity.
Functional groups can be used to distinguish similar compounds from each other.
Key Terms
functional group: A specific grouping of elements that is characteristic of a class of compounds, and determines some properties and reactions of that class.
functionalization: Addition of specific functional groups to afford the compound new, desirable properties.
Use the masses of the elements below to calculate the mass of 8.70 moles of H3M (the number at the bottom of
each square is the atomic mass of that element)
1
2
3
4
5
6
A
H
C
B
M
Sm
aragon
hillsdale
capuchino
mills
burlingame
san mateo
1.10
3.50
7.09
11.22
15.23
18.98
Given:
Wanted
Relationship: 1 mole H3M =
grams
Final answer
grams
yes use the masses of an element below calculate the mass of it 8.70 mole of each 3M
A functional group is a specific arrangement of atoms in an organic compound that is capable of characteristic reactions
Is this true of false
PLEASE HELPP ASAP I Would appreciate it
Answer:
True
Explanation:
The equilibrium constant kc of the reaction H2+I2 produces HI is 54.3at430°C. Starting with 6.0moles,of HI moles of HI in 1.0dm^3 reaction vessel, calculate th5 concentration of H2,I2 and HI at equilibrium
Answer:
[H2] = [I2] = 0.64M; [HI] = 4.72M
Explanation:
Based on the reaction:
H2 + I2 ⇄ 2HI
The K is defined as:
k = 54.3 = [HI]² / [H2] [I2]
Where [] is molar concentration of each reactant at equilibrium
As the initial concentration of HI is 6mol/dm^3 = 6M the equilibrium concentration of each reactant is:
[H2] = X
[I2] = X
[HI] = 6 - 2X
Where X is reaction coordinate
Replacing:
54.3 = [6-2X]² / [X] [X]
54.3X² = 4X² - 24X + 36
0 = -50.3X² - 24X + 36
Solving for X:
X = -1.12. False solution, produce negative concentrations
X = 0.64M. Right solution
Replacing:
[H2] = 0.64M
[I2] = 0.64M
[HI] = 6 - 2*0.64M = 4.72M
Equilibrium concentrations are:
[H2] = [I2] = 0.64M; [HI] = 4.72MDetermine the AMOUNT OF NO2, LIMITING REACTANT, AND THE AMOUNT AND NAME OF EXCESS REACTANT.
10.00 g of O2 reacts with 20.00 g NO
The molar masses of O2, NO, and NO2 are 32.00 g/mol, 30.01 g/mol, and 46.01 g/mol, respectively
Answer:
balanced equation mole ratio 5 2 mol NO/1 mol O2
10.00 g O2 3 1 mol O2/32.00 g O2 5 0.3125 mol O2
20.00 g NO 3 1 mol NO/30.01 g NO 5 0.6664 mol NO
actual mole ratio 5 0.6664 mol NO/0.3125 mol O2 5 2.132 mol NO/1.000 mol O2
Because the actual mole ratio of NO:O2 is larger than the balanced equation mole
ratio of NO:O2, there is an excess of NO; O2 is the limiting reactant.
Mass of NO used 5 0.3125 mol O2 3 2 mol NO/1 mol O2 5 0.6250 mol NO
0.6250 mol NO 3 30.01 g NO/1 mol NO 5 18.76 g NO
Mass of NO2 produced 5 0.6250 mol NO2 3 46.01 g NO2/1 mol NO2 5 28.76 g NO2
Excess NO 5 20.00 g NO 2 18.76 g NO 5 1.24 g N
Explanation:
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Answer: it should be 80g
Explanation:
How long does cream of tartar activate
Please help me with this chem question. Only answer if you know it.
Answer:
solid=(s)
Explanation:
A solubility table may be something your class may want you to memorize. Where an aqueous (aq) solution is formed by a soluble compound dissolving in water, our solvent. So if we refer to this solubility table, it says phosphate (PO4) is usually insoluble, so in the reaction it won't break down in water and will stay as a solid (s). The only exceptions are group 1 alkali metals or ammonium (NH4+).
some one please help me
Answer:
C.4
Explanation:
.The ___________ is the muscular organ that pumps blood through the circulatory system by rhythmic contractions and relaxation
heart
lungs
kidneys
liver
Help!!!
2KCIO.
2KOI
30,
2
How many moles of potassium Chlorate are needed to produce 15.0 moles of oxygen
Answer:
10 moles of potassium Chlorate are required to produce 15 mole of oxygen
Explanation:
The balanced chemical equation is
2KClO3(s)→2KCl(s)+3O2(g)
2 moles of potassium Chlorate produce 3 moles of oxygen
Number of moles of potassium Chlorate required to produce 1 mole of oxygen [tex]= \frac{2}{3}[/tex]
Number of moles of potassium Chlorate required to produce 15 mole of oxygen
[tex]= \frac{2}{3} * 15\\= 10[/tex]
10 moles of potassium Chlorate are required to produce 15 mole of oxygen
calculate the PH of a solution 0.030 M HCl
Answer:
pH = 1.522
Explanation:
HCl + H20 -> Cl^(-) + H30^(+)
0.03M ____ ____
____ 0.03M 0.03M
[H30^(+)] = 0.03M
pH = - log([H30^(+)])
pH = - log( 0.03)
pH = 2 - log3
pH = 2- 0.47
pH = 1.522
The pH of the hydrogen chloride, HCl solution having a concentration of 0.03 M is 1.52
What is pH ?This is simply a measure of the acidity / alkalinity of a solution.
The pH measures the hydrogen ion concentration while the pOH measures the hydroxide ion concentration
How to determine the concentration of H⁺Dissociation equation
HCl(aq) —> H⁺(aq) + Cl¯(aq)
From the balanced equation above,
1 mole of HCl contains 1 mole of H⁺.
Therefore,
0.03 M HCl will also contain 0.03 M H⁺
How to determine the pH Hydrogen ion concentration [H⁺] = 0.03 MpH =?pH = –Log H⁺
pH = –Log 0.03
pH = 1.52
Learn more about pH:
https://brainly.com/question/3709867
Scientist have genetically altered a common virus so that it can Destroy the most lethal type of brain tumor without harming the healthy tissue nearby this technology is used for all expect
Answer:
The correct answer is - discovering or diagnosing the disease.
Explanation:
According to the question, this technology includes genetically modifying a common virus in order to destroy or kill the deadly brain tumor without affecting normal cells around the tumor, this technique is genetic engineering.
This technique can help in treating or curing the disease by killing the tumor cells and make them non-lethal. It can also prevent the tumor cells to grow and make them controlled. There is nothing mention related to diagnosing the disease in the question and it is not possible to find this tumor with help of such a technique.
If a chemist dilutes 2L of 0.700M solution to 3 L what will be the new concentration (M)?
Answer:
0.233M
Explanation:
M1 = 0.700M
V1 = 2L
V2 = 3L
M2 = ?
M1V1 = M2V2
(0.700)(2) = M2(3)
M2 = 0.233M
what the difference between a sodium atom (Na) and a sodium ion (Nal+)
Answer:
So a sodium atom has the electronic configuration 2,8,1 meaning it has 1 electron on its outer shell. It has a neutral charge since the number of electrons is equal to the number of protons.
A sodium ion is one that has lost the electron on its valence shell. The electronic configuration is 2,8 and it has a positive charge because it has more protons than electrons.
Answer:
[tex]\boxed {\boxed {\sf Number \ of \ electrons \ and \ net \ charge}}[/tex]
Explanation:
Remember that protons have a positive charge of +1 and electrons have a negative charge of -1. Atoms have protons and electrons.
A sodium atom has the electron configuration of 2-8-1. It has 11 electrons and its atomic number (number of protons) is also 11. This means it is a neutral atom because the charges of the electrons (-11) and protons (+11) balance each other out.
However, a sodium ion is different. It loses the 1 valence electron, so it only has 10 electrons. It still has the same atomic number of 11.
It is a not a neutral atom because the charges of the electrons (-10) and protons (+11) do not balance out. It has more protons and a net positive charge of +1. It is a cation or a positively charged ion.
Write word equation of carbon burns in oxygen
Answer:
Word equation carbon + oxygen → carbon dioxide
Chemical equation C + O2 → CO2
__Co + __F2 --> __CoF3
Answer:
2Co + 3F2 --> 2CoF3
Explanation:
When balancing an equation we need to ensure that the products used equal the reactants produced. Hence to balance the equation we need 3 F2 molecules so we have 6F atoms in total. and since 1 Co molecule bonds to 3 F molecules. We are gonna need to 2 Co molecules.
At the same temperature and pressure, 15L of CO2 gas has the same amount of molecules as what volume of N2 gas?
Answer: 15 L of [tex]N_2[/tex] gas will have same numer of molecules as 15L of [tex]CO_2[/tex] gas at the same temperature and pressure,
Explanation:
According to avogadro's law, equal moles of gases occupy equal volume at same conditions of temperature and pressure.
[tex]\text{Number of moles}=\frac{\text{Given volume}}{\text{Molar volume}}[/tex]
[tex]\text{Number of moles of} CO_2=\frac{15L}{22.4L/mol}=0.67mol[/tex]
[tex]1 mole of CO_2[/tex] contains=[tex]6.022\times 10^{23}[/tex] molecules of [tex]CO_2[/tex]
Thus 0.67 moles of [tex]CO_2[/tex] contains=[tex]\frac{6.022\times 10^{23}}{1}\times 0.67=4.03\times 10^{23}[/tex] molecules
Now molecules of [tex]N_2[/tex] = molecules of [tex]CO_2[/tex] = [tex]4.03\times 10^{23}[/tex]
[tex]6.023\times 10^{23}[/tex] molecules of [tex]N_2[/tex] = 22.4 L
Now [tex]4.03\times 10^{23}[/tex] molecules of [tex]N_2[/tex] = [tex]\frac{22.4}{6.023\times 10^{23}}\times 4.03\times 10^{23}=15L[/tex]
Unsaturated, saturated, or supersaturated?
Answer:
supersaturated
Explanation:
What’s an easy way to learn to convert metric numbers? Help plz
Explanation:
HOPE IT HELPS
THANKS
If the reaction was reversed and we wanted to produce as much NaN3, in grams, as possible from 30.0 g of N2 and 20.0 g of Na, which reactant would be the limiting reactant? (4 points) How much NaN3 would actually be produced?
Answer:
N₂
Explanation:
Sodium is a larger molecule with a much higher molecular weight. However, 20g of N₂ would be a smaller amount of molecules than 20g of sodium due to how there are multiple nitrogen molecules.
2/3 * given mass of N₂ = mass of N₃
N₃ (Azide ion) given mass = 20g
Na = 20g
Masses of chemicals are equal
Na = 22.990g/mol
20g/22.990g/mol = 0.8699mol of Na
N₃ = 20g
N₃ = N g/mol x 3
N = 14.007 g/mol
14.007 x 3 = 42.021 g/mol
N₃ = 42.021g/mol
20g/42.021g/mol = 0.4759 mol of N₃
Notice how there are fewer moles of the Azide ion than the Sodium.
0.4759 moles of NaN₃ is produced
combine molecular weights:
42.021 + 22.990 = 65.011 g/mol
multiply by amount of moles of the limiting reactant:
0.4759 mol *65.011 = 30.942 g
Also, here is the balanced equation:
3N₂ + 2Na = 2NaN₃
The results are the same as the balanced equation.
Calculate the pH of the solution, given the following (H+). Then identify the
solution as acidic, basic, or neutral. [H+]=7.94x10^-5 *
4.1; basic
0 6.9; basic
04.1; acidic
Answer: 4.1 Acidic
Explanation:
pH = -log(H+)
= -log (7.94x10^-5)
= 4.10017949757
= 4.1
any pH under 7 is acidic
To balance an equation, you need to write numbers called (BLANK) in front of the molecule or compound. DO NOT CHANGE THE SUBSCRIPTS!
Answer:
Coefficients
Calculate the specific heat of an unknown metal if it took 58.1 J to increase the temperature of 89.4 g of the metal from 23.4°C to 25.5°C.
Answer:
[tex]c=0.309\ J/g^{\circ} C[/tex]
Explanation:
The increase in heat, Q = 58.1 J
Mass, m = 89.4 g
The temperature increases from 23.4°C to 25.5°C. We need to find the specific heat of an unknown metal.
We know that the increase in heat is given by :
[tex]Q=mc\Delta T\\\\c=\dfrac{Q}{m\Delta T}\\\\c=\dfrac{58.1}{89.4\times (25.5-23.4)}\\\\c=0.309\ J/g^{\circ} C[/tex]
So, the specific heat of an unknown metal is equal to [tex]0.309\ J/g^{\circ} C[/tex].
9. Which of these things is true about the Moon?
A
The Moon is always moving around Earth in a circle.
B
The Moon is always in the same position in Earth's sky.
С
The Moon is always moving in many changing patterns around Earth.
D
The Moon is always moving back and forth across Earth's sky.
The true statement about the Moon is: A. The Moon is always moving around Earth in a circle.
What is a Moon?A Moon can be defined as the natural satellite of planet Earth that shines due to the Sun's reflected light, as it revolves around the Earth from west to east in 29½ days.
The phases of the Moon.Generally, there are four (4) primary Moon phases and these are:
New MoonFirst QuarterFull MoonThird Quarter (Last Quarter)In conclusion, the true statement about the Moon is that it is always moving around Earth in a circle.
Read more on the Earth here: brainly.com/question/1286910
how many moles of aluminum are produced from 4.9 moles of lithium?
Answer:
2.95078 × 10^23
hope this helps you ☺️☺️