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
mart [117]
3 years ago
7

Please answer this! (if you dont know the answer DONT ANSWER this is costing my grades)

Chemistry
2 answers:
Colt1911 [192]3 years ago
7 0

Answer:

D

Explanation:

Sauron [17]3 years ago
4 0

This is A because the glacier picks up all different rocks and sediments while moving. So it’s A

You might be interested in
How much energy is released when 0.40 mol C6H6(g) completely reacts with oxygen? 2C6H6(g) + 15O2(g) 12CO2(g) + 6H2O(g) kJ
Sladkaya [172]

Answer:

-1268 kJ

Explanation:

The molar enthalpy of combustion of C6H6 is -3170 kJ/mol

2C6H6(g) + 15O2(g) → 12CO2(g) + 6H2O(g)

Therefore;

when 1 mole of C6H6 undergoes combustion, an energy of -3170 kJ/mol is released.

Therefore; for 0.40 mole

= 0.4 × -3170 kJ

= -1268 kJ

7 0
3 years ago
What is the pH of a solution with (H3O+)=5.6x10-2M?
balu736 [363]

Answer:

Explanation:

Given parameters:

Concentration of H₃O⁺  = 5.6 x 10⁻²M

Solution:

To solve for the concentration of H₃O⁺ in the solution, we simply use the expression below:

            pH = -log₁₀[H₃O⁺]

where [H₃O⁺] =  5.6 x 10⁻²M is the concentration of H₃O⁺

            pH = -log₁₀[5.6 x 10⁻²] = - x -1.25 = 1.25

3 0
3 years ago
Read 2 more answers
Tris has a molecular weight of 121 g/mol. How many grams of Tris would you need to make 100 mL of a 100 mM solution of Tris
Zepler [3.9K]

Answer:

1.21 g of Tris

Explanation:

Our solution if made of a solute named Tris

Molecular weight of Tris is 121 g/mol

[Tris] = 100 mM

This is the concentration of solution:

(100 mmoles of Tris in 1 mL of solution) . 1000

Notice that mM = M . 1000  We convert from mM to M

100 mM . 1 M / 1000 mM = 0.1 M

M = molarity (moles of solute in 1 L of solution, or mmoles of solute in 1 mL of solution). Let's determine the mmoles of Tris

0.1 M = mmoles of Tris / 100 mL

mmoles of Tris = 100 mL . 0.1 M → 10 mmoles

We convert mmoles to moles → 10 mmol . 1mol / 1000mmoles = 0.010 mol

And now we determine the mass of solute, by molecular weight

0.010 mol . 121 g /mol = 1.21 g

8 0
3 years ago
A chemist fills a reaction vessel with mercurous chloride solid, mercury (I) aqueous solution, and chloride aqueous solution at
makvit [3.9K]

Answer:

ΔG° = -533.64 kJ

Explanation:

Let's consider the following reaction.

Hg₂Cl₂(s) ⇄ Hg₂²⁺(aq) + 2 Cl⁻(aq)

The standard Gibbs free energy (ΔG°) can be calculated using the following expression:

ΔG° = ∑np × ΔG°f(products) - ∑nr × ΔG°f(reactants)

where,

ni are the moles of reactants and products

ΔG°f(i) are the standard Gibbs free energies of formation of reactants and products

ΔG° = 1 mol × ΔG°f(Hg₂²⁺) + 2 mol × ΔG°f(Cl⁻) - 1 mol × ΔG°f(Hg₂Cl₂)

ΔG° = 1 mol × 148.85 kJ/mol + 2 mol × (-182.43 kJ/mol) - 1 mol × (-317.63 kJ/mol)

ΔG° = -533.64 kJ

3 0
3 years ago
How do water molecules dissolve a salt?
Artist 52 [7]

Answer:

Water can dissolve salt because the positive part of water molecules attracts the negative chloride ions and the negative part of water molecules attracts the positive sodium ions. The amount of a substance that can dissolve in a liquid (at a particular temperature) is called the solubility of the substance.

Explanation:

5 0
4 years ago
Other questions:
  • On the axes provided, label pressure on the horizontal axis from O mb to 760 mb and volume on the vertical axis from O to 1 mL.
    14·2 answers
  • How can a sample of uranium-235 that has critical mass be induced to react? it must be spilt with a laser. it must be fused to a
    15·2 answers
  • Complete the model to show how a dinosaur fossil forms. Drag each picture to the correct location on the model. Then place the c
    5·2 answers
  • Testbank Question 47 Consider the molecular orbital model of benzene. In the ground state how many molecular orbitals are filled
    12·1 answer
  • Which of these correctly defines the pOH of a solution?
    5·1 answer
  • This is earths science can anyone help me? I think I got it all wrong! I’m horrible with numbers.
    12·1 answer
  • A thermometer is placed in water in order to measure the water’s temperature. What would cause the liquid in the thermometer to
    14·1 answer
  • A1br3 and 3K and 3K and 3KBr and A1 are an example of what reaction
    10·1 answer
  • If 27g of N2 reacts with 5.4g of H2, how much NH3 will be<br> produced?
    11·1 answer
  • My chem test is tomorrow!! please help
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!