1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ne4ueva [31]
3 years ago
10

Please help me I need this

Chemistry
1 answer:
klio [65]3 years ago
7 0
It would be:
1.D
2.A
3.B
4.C

You might be interested in
What is the oxidation state of each individual carbon atom in c2o42−?
MA_775_DIABLO [31]

Answer:

+3

Explanation:

The oxygen all have a -2 oxidation state. (peroxides are exceptions)

The chemical structure is symmetrical. Both carbon are equivalent.

2 (oxidation state of carbon) + 4 (oxidation state of oxygen) = charge of ion.

2 (oxidation state of carbon) + 4 (-2) = -2

oxidation state of carbon = +3

7 0
3 years ago
Read 2 more answers
An unknown triprotic acid (H3A) is titrated with NaOH. After the titration Ka1 is determined to be 0.0013 and Ka2 is determined
e-lub [12.9K]

Answer:

6.68 X 10^-11

Explanation:

From the second Ka, you can calculate pKa = -log (Ka2) = 6.187

The pH at the second equivalence point (8.181) will be the average of pKa2  and pKa3. So,

8.181 = (6.187 + pKa3) / 2

Solving gives pKa3 = 10.175, and Ka3 = 10^-pKa3 = 6.68 X 10^-11

7 0
3 years ago
What is mass????????????????????
lbvjy [14]

Answer:

Do you need the definition or the equation to find it?

Explanation:

Equation:

Mass=volume x density

4 0
3 years ago
Reactions cannot occur without a certain minimum amount of energy. What is this minimum amount of energy called? A.the activatio
madam [21]
A. the activation energy 
7 0
3 years ago
Read 2 more answers
What happens when gasoline is used to power a vehicle?
Romashka [77]
The answer should be A. Because the energy in gasoline is called chemical. When burned it is heat, Then to power a vehicle, it is mechanical energy. But I don't know whether the question wants to mean that the energy in the gasoline will not convert totally to the heat, so it will lose. But if think like this, when heat energy transform to mechanical, it will lose again. So I think the answer is A.
3 0
3 years ago
Other questions:
  • How many formula units are contained in 23.5 g of Sb2S3
    10·2 answers
  • (I seriously don't understand what this questin means, please don't delete need all the help i can get)
    8·2 answers
  • How does increasing the temperature affect a reaction?
    14·1 answer
  • What is the density of a block of marble that occupies 287cm3 and has a mass of 869g?
    5·1 answer
  • A constant-volume calorimeter was calibrated by carrying out a reaction known to release 3.50 kJ of heat in 0.200 L of solution
    12·1 answer
  • How many grams of H2 would be formed if 34 grams of carbon reacted with an unlimited amount of H2O? The reaction is:
    11·1 answer
  • What is the molecular formula of a compound whose molar mass is 88.0 and whose percent composition is 54.5% carbon, 9.1% hydroge
    13·1 answer
  • You want to know how many moles of gas your lungs can hold. You start off with a balloon that has 1.4 moles of gas and occupies
    8·1 answer
  • Water is super soluble and this solubility is incredibly helpful for life. Tell me how this solubility helps maintain different
    11·1 answer
  • 72.40% iron,27.60% Oxygen Empirical formula
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!