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
ch4aika [34]
3 years ago
12

Help me with this please I need the answers ASAP

Chemistry
1 answer:
Tema [17]3 years ago
7 0

Answer:

1. Exothermic reaction

2. Is being released

3. The energy comes from the change in energy between reactants and products

Explanation:

The reaction is producing energy. A reaction that produce energy is called a <em>Exothermic reaction.</em>

<em />

As the energy is produced, the energy is being <em>released.</em>

<em />

As you can see in the image, the energy of the reactants is higher than the energy of the products. This change of energy in the chemicals produce the production of energy as heat.

You might be interested in
A chemist combined 0.440 L of an unknown calcium solution with an excess of ammonium chromate. This resulted in the precipitatio
Rina8888 [55]

The concentration of the original calcium ions is 0.005 M

<h3>What is concentration?</h3>

The term concentration has to do with the amount of substance in solution. We know that the concentration can be measured in a lot of units such as mole/litre, grams per litre, percentage and so on.

As such we have the equation;

Ca^2+(aq) + (NH4)2CrO4(aq) --------> CaCrO4(s) + 2NH4^+(aq)

Number of moles of the precipitate = 346.7 * 10^-3 g/156 g/mol

= 0.0022 moles

Now;

1 mole of Ca^2+ produces 1 mole of CaCrO4 hence 0.0022 moles of CaCrO4 was produced by  0.0022 moles of CaCrO4.

Given that the volume of the solution is  0.440 L, the concentration of the solution is;   0.0022 moles/0.440 L

= 0.005 M

Learn more about molarity:brainly.com/question/8732513

#SPJ1

6 0
1 year ago
What is the temperature range on the moon?
jolli1 [7]
When sunlight hits the moon's surface, the temperature can reach 260 degrees Fahrenheit (127 degrees Celsius). When the sun goes down, temperatures can dip to minus 280 F (minus 173 C).
8 0
3 years ago
Read 2 more answers
HELP ASAP I will give you a brainliest
mixer [17]

Answer: its the first one buster

3 0
2 years ago
How many of grams of CuSO4 are in 475ml of a 2.0M aqueous solution
Anettt [7]

Answer:

151.63 g

Explanation:

We first get the number of moles;

Moles = Molarity × volume

          = 2.0 × 0.475

          = 0.95 moles

1 mole of CuSO4 = 159.609 g/mol

Therefore;

Mass = moles × molar mas

         = 0.95 moles × 159.609 g/mol

         = 151.63 g

8 0
3 years ago
Read 2 more answers
Which of the following can be considered evidence?
melomori [17]

Answer:

Shiny like a limousine

You're spending like a cash machine

Smile, show your golden teeth

That's how you cover up your cavities

You're glowing like a diamond ring

I saw you bought some other things

You're spending like a cash machine

To cover up your insecurities

Don't front, no needExplanation:

3455

5 0
3 years ago
Other questions:
  • ____________ properties include melting point, boiling point, strength, and malleability.a.physicalc.chemicalb.reactived.none of
    15·1 answer
  • When 14.8 g KOH is dissolved in 85.6 g of water in a coffee-cup calorimeter, the temperature rises from 19.3 °C to 32.76 °C. Wha
    8·1 answer
  • Zn(s)+2HCl(aq)-&gt;ZnCl2(aq)+H2(g)
    5·2 answers
  • If you help me, you are the best​
    15·1 answer
  • What type of reaction is Pb(NO3)2 (aq) + 2KI (aq) →PbI2 + 2KNO3 (aq)
    7·1 answer
  • Which of the following have the correct pairing of ion charge to the number of protons and electrons that would
    13·1 answer
  • What is the molecular formula of a compound that contains 38.6% C, 45% N, and 16.4% H, if 0.158 g of the compound occupies 125 m
    14·1 answer
  • What is the best explanation for why a particle is striking point X?
    12·2 answers
  • What can do ,when the solution remain in the jet/ nozzle of the pipette?​
    13·1 answer
  • Explain why people are building green roofs to live healthier lives.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!