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disa [49]
3 years ago
5

What causes heat energy when you rub two objects against each other?

Chemistry
2 answers:
harkovskaia [24]3 years ago
3 0

Answer:

Friction is a force that opposes motion. ... When friction acts between two surfaces that are moving over each other, some kinetic energy is transformed into heat energy.

avanturin [10]3 years ago
3 0

Answer: Friction

Explanation: a force between two moving objects rubbing together that slow the objects and produces heat.

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How many gram of fe in feno3​
Vesna [10]

Answer:

800000

Explanation:

i think 800000 grams are in it.

6 0
3 years ago
Read 2 more answers
A sample of sulfur dioxide (SO2) is initially at a temperature of
creativ13 [48]

Answer:

874.89 mmHg

Explanation:

Using the combined gas law equation as follows:

P1V1/T1 = P2V2/T2

Where;

P1 = initial pressure (mmHg)

P2 = final pressure (mmHg)

V1 = initial volume (L)

V2 = final volume (L)

T1 = initial temperature (K)

T2 = final temperature (K)

Based on the information provided in this question;

P1 = 950 mm Hg

P2 = ?

V1 = 25 L

V2 = 30 L

T1 = 155°C = 155 + 273 = 428K

T2 = 200°C = 200 + 273 = 473K

Using P1V1/T1 = P2V2/T2

950 × 25/428 = P2 × 30/473

23750/428 = 30P2/473

55.49 = 0.063P2

P2 = 55.49 ÷ 0.063

P2 = 874.89 mmHg

8 0
3 years ago
What is the pH of a 0.028M solution (pH=-log(M))<br><br> A) 3.56<br> B)2.88<br> C)1.55<br> D)1
Andrew [12]

Answer:

C

Explanation:

-log(0.028)=1.55

8 0
4 years ago
Read 2 more answers
Write the overall balanced equation for the reaction:<br><br> N2O4(g) + CO → NO(g) + CO2(g)+NO2(g)
zzz [600]

Answer:

This reaction has infinite ways to be balanced

Explanation:

To balance this equation we can use the algebraic method:

N2O4(g) + CO → NO(g) + CO2(g)+NO2(g)

Where we write each molecule as a letter:

A + B → C + D + E

Then, we write the equations according the number of atoms of each molecule. That is:

Oxygen → 4A + B = C + 2D + 2E <em>(1)</em>

Nitrogen → 2A = C + E <em>(2)</em>

Carbon → B = D <em>(3)</em>

Then, we have to give 1 arbitral number for a letter. For example:

B = 1; D = 1

<em>(1) </em>4A + 1 = C + 2 + 2E

4A = C + 2E + 1

2A = C + E <em>(2) </em>Twice <em>(2):</em>

4A = 2C + 2E

Subtracting <em>(1) </em>in <em>(2)</em>

C + 2E + 1 = 2C + 2E

C + 1 = 2C

1 = C

Si 1 = C:

4A + 1 = 1 + 2 + 2E

4A = 2 + 2E <em>(1)</em>

y:

2A = 1 + E <em>(2)</em>

Twice:

4A = 2 + 2E

As <em>(1) </em>and <em>(2) </em>are the same equation:

<h3>This reaction has infinite ways to be balanced</h3><h3 />

For example:

N2O4(g) + CO → NO(g) + CO2(g)+NO2(g)

8 0
3 years ago
How does thermal energy affect the three states of matter??
Ivenika [448]
An increase in thermal energy, changes the state of matter from solid to liquid to gas.
8 0
4 years ago
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