A substance is a base if it has a pH value greater than Ck-
12
Answer:
pH means power of hydrogen. 1.0 Click to let others know, how helpful is it it is a logarithmic scale used to determine acidity or basicity or aqueous solution. if pH value of a substance is 13 then it means that the substance is basic in nature.
Identify the correctly balanced chemical reaction.*
CasH52(1) + 38 O2(g) → 25 CO2(g) + 26 H2O(g)
O CasH=2(1) + 18 0:(9) — 25 CO(g) + 11 H:0(9)
2 C2:H:2(1) + 51 O2(g) — 50 CO(g) + 52 H2O(g)
O CasH:2() + 38 0:(9) — 25 CO:(9) + 26 H:0(1)
Answer:
CasH52(1) + 38 O2(g) → 25 CO2(g) + 26 H2O(g)
Explanation:
How many moles are there in a 7.00 L of a gas at a certain temperature and pressure, if 0.369 moles of the same gas at the same conditions occupies 9.75L?
Answer: 200
Explanation:
It is 200 because 1 mole +1mole is a rat and a rat is 200.
The acceleration due to gravity ____. (The g in GPE = mgh)
A Grignard synthesis begins with 6.00 g of bromobenzene and ends with 3.94 g benzoic acid. What is the percent yield of the benzoic acid
The percentage yield of the benzoic acid is mathematically given as
P= 84.56 %
Question Parameters:
A Grignard synthesis begins with 6.00 g
and ends with 3.94 g benzoic acid.
Generally, if 157 g of bromobenzene produced = 122 g of benzoic acid
Hence,6 g of bromobenzene will produce
X== (122 / 157 ) * 6
X= 4.66 g
Since the experimental yield of benzoic acid = 3.94 g
Therefore the Percentage yield
P = 3.94 / 4.66 * 100
P= 84.56 %
For more information on Chemical Reaction
https://brainly.com/question/11231920
Logan is comparing the characteristics of different types of organisms. Which best describes a difference between insects and bacteria?
Оа Bacteria require energy to perform life functions while insects do not.
Ob Insects require energy to perform life functions while bacteria do not.
Ос Bacteria are made of one cell, while insects are made of many cells.
Od Insects are made of one cell, while bacteria are made of many cells.
Answer:
Ob Insects require energy to perform life functions while bacteria do not.
Explanation:
hope this help
If 1. 8 moles of sodium are present, how many moles of zinc are produced?
Identify which properties could correspond to solids, plasmas, or both. maintain a unique shape. particles have very high velocities. can conduct electricity. typically have a low temperature.
Solid have the unique shape and low temperature, plasma have not unique shape and high velocity and both show electrical conductivity.
What is state of matter?Matter is divided into 4 states as solid, liquid, gas and plasma according to the arrangement of atoms present in that.
Solid stateIn the solid state all particles are connected rigidly with each other, and show very less movement that's why maintain a unique structure. They have low temperature as it helps to maintain the rigidity and it also conducts electricity because of the presence of electrons in the constitute atoms.
Plasma stateThis is the 4th state of matter in which positively and negatively charged particles are present, these particles are held together by the weak force that's why they show good velocity, and do not maintain a unique shape. Plasma also shows the electric conductivity.
Hence, both state will conduct electricity and show different characteristics.
To know more about state of matter, visit the below link:
https://brainly.com/question/895788
Answer:
answer in picture
Explanation:
hello friends ~
Metals, except Al and Zn, react with oxygen to form _______ oxides.
A. acidic
B. neutral
C. amphoteric
D. basic
Answer:
BasicExplanation:
Metals, except Al and Zn, react with oxygen to form Basic oxides.If moving objects have kinetic energy, do moving atoms kinetic energy?
Answer:
yes, if they were in rest they would have potential energy
Explanation:
What type of chemical reaction is Cl2 + Cu → CuCl2?
I am not sure if it is Double displacement.
Answer:
Combination Reactions
Explanation:
That's not Double Replacements because DR is two different things change places with each other.
EX: A-B + C-D ---> A-D + C-B
Cl2 + Cu → CuCl2
This is Combination Reactions because CR is two or more things come together to make a single larger thing.
EX: A + B ---> A-B
What are the reactants in the reaction below? (select all that apply)
Answer:
[tex]C_{6}[/tex][tex]H_{12}O_{6}[/tex] + 6[tex]O_{2}[/tex]
Explanation:
The reactants are on the left side of the equation and it includes Glucose and Oxygen
help!
Upon hitting a fixed boundary, a wave is sent back with a phase change of _______ °.
A. 0
B. 180
C. 90
D. 45
can water stay liquid below zero degrees Celsius? how can glass be a liquid if its so hard? what made the hole in the ozone go away?
2. Write Lewis dot structures (electron-dot formula) for chlo CI, and calcium chloride, CaCl. How does the chlorine attain a stable octet in each of the preceding cases? Explain. Ca (Z=20); CI (Z=17)
Answer:
lewis from stardew valley or who?
Explanation:
in which section(s)/point(s) is the car accelerating?
Answer:
b-c and d-e
Explanation:
At these points/sections, uneven distances are covered in equal intervals of time.
Therefore, velocity is not constant => it is accelerating
Which statement about alkanes is not correct?
A Alkanes are unsaturated hydrocarbons.
B Alkanes burn to release heat energy.
C Alkanes form carbon dioxide and water when they burn.
D Alkane molecules contain only single bonds.
Answer:
A
Explanation:
Alkanes are saturated hydrocarbons. The rest are also properties of Alkanes
Explain why the process of differentiation is not similar to the process of crossing over?
Answer:
hope it will help u
Explanation:
Matk me as brainlist plssaa
what is the molar mass of cobalt (II) nitrate?
Answer:
182.943 g/mol
Co(NO3)2 ⇒ Co, NO3, 2 (Cobalt and 2 Nitrate)
Multiply the number of grams in the mass formula and broken compounds into the base number.
Your answer is 182.943 grams.
Answer:
182.94 g/mol
Explanation:
hope this helps :)
Which of the following represents an element?
What would happen to the object if the gravity was high?
an object that sticks to iron
Answer:
A magnet
Explanation:
If you had 0.2M solutions of nitric and carbonic acids, which solution would have a lower pH?
Why?
0.2 M each of nitric acid and carbonic acid will have the same pH.
pHThe pH of substances is mathematically given as:
pH - -log [H+]
Nitric and carbonic acid dissociates according to the following:
HNO3 ---------> H+ + NO3-
H2CO3 -------> H+ + HCO3-
Thus, both acids ionizes to produce the same number of moles of H+, thus, producing the same pH
More on pH can be found here: https://brainly.com/question/491373
Chlorine gas occupies a volume of 1. 2 liters at 720 torr pressure. What volume will it occupy at 1 atm pressure? Note: 760 torr = 1 atm
I NEED HELP!! (mostly w/ torr and atm part)
Answer:
V2 = 1.14
Explanation:
V1 = 1.2L
P1 = 720 torr (÷ by 760 to get atm. Because 1 atm equal 760 torr) = 0.95 atm
P2 = 1 atm
V2 =?
Follow the equation below to solve this question
P1V1 = P2V2
0.95 x 1.2 = 1 x V2
1.14 = V2
So 1.14 is the answer!
Use the table of data for a decomposition reaction to answer the question Concentration (C) at T1 (g/L) C at T2 (g/L) C at T3 (g/L) Cat T4 (g/L) 100 300 50 50 Reactant 100 0 125 125 Product 1 100 125 125 0 Product N In a decomposition reaction a reactant breaks down to form two products. At which time did the system first reach chemical equilibrium? (1 point)
Based on the nature of chemical equilibrium, the system reached equilibrium first at the time T2.
What is chemical equilibrium?Chemical equilibrium refers to the state of a reversible chemical reaction in which the rate of forward reaction for the the formation is equal to the rate of backward reaction for the formation of reactants.
In the table of the decomposition reaction given above, the system reached equilibrium first at the time T2 when the concentration of the reactant and products were the same.
Learn more about chemical equilibrium at: https://brainly.com/question/5081082
Answer:
T3
Explanation:
I've taken the test
helppp me!!!
why a multicellular organism needs specialized cells to survive
Answer:
Cells function differently in unicellular and multicellular organisms. A unicellular organism depends upon just one cell for all of its functions while a multicellular organism has cells specialized to perform different functions that collectively support the organism.
As a wave passes a piece of cork floating on the surface, the cork bobs up and down but remains in more or less the same position. This up and down motion is representative of...Select one:
a. a transverse wave.
b. a compression wave.
c. a sound wave.
d. a breaker wave.
Answer:
a transverse wave
Explanation:
25 POINTS! How does bond energy determine whether a chemical reaction is exothermic or endothermic?
why was it important to heat your hydrate gently for 5 minutes before heating it strongly for 10 minutes
Step 5: Measure the Mass of the Water (Iron)
12. 42 g
52. 66 g
40. 24 g ?
Answer:
Mass of 1 H atom: 1.008 amu x 1.661 x10-24 g/amu = 1.674 x10-24 g. Mass of 1 mole of H atoms: 1.674 x10-24g/H atom x 6.022 x1023H atoms = 1.008 g.
62 pages
Missing: 66 | Must include: 66
Explanation: