All categories

2 years ago

Thermal energy chemical change lab report

Chemistry

1 answer:

natulia [17]2 years ago

5 0

Answer:

This is required answer.

Explanation:

Given that,

Thermal energy chemical change lab report

We know that,

Thermal energy :

When we rise a temperature of any substance then the molecules of substance moves fastly then the heat produced. It is called thermal energy.

Chemical change in the thermal energy :

When we heat a substance then the thermal energy increases and the molecules of substance moves fastly. That means the chemical bonds are break in reactants due to energy.

In products, The new chemical bonds are create due to energy.

For example ; The coal is burned then produced heats water and change it into steam.

Hence, This is required answer.

You might be interested in

How many hydrogen atoms are in 7.80 mol of ammonium sulfide?

Alexus [3.1K]

The number of hydrogen atoms that are in 7.80 moles of ammonium sulfide are 3.756 x 10^25 atoms

calculation

Step 1: calculate the moles of H in (NH4)2S

since there are 8 atoms of H in (NH4)2S the moles of

H = 8 x7.80 = 62.4 mole

Step 2: use of Avogadro's law constant to determine the number of H atom

that is 1 mole = 6.02 x10^23 atoms

62.4 moles=? atoms

cross multiplication

= [ 62.4 x 6.02 x10^23]/ 1 mole= 3.756 x10^25 atoms

7 0

2 years ago

Read 2 more answers

How did qualitative chemical and enzyme tests help avery identify dna as the transforming principle?

Rzqust [24]

Qualitative chemical and enzyme tests helped Avery identify DNA as the transforming principle by conducting a series of tests to find out if the transforming principle was DNA or a protein and the result is that no protein was present but that DNA was present. Hope this answers your question.

7 0

3 years ago

Read 2 more answers

What is meant by the term chemical reaction

pantera1 [17]

Answer:

<h3> $\huge{ \underline{ \underline { \bold{ \sf{ \orange{See \: below}}}}}}$ </h3>

Explanation:

▪️ $\underline{ \bold{ \sf{ \blue{Chemical \: reaction}}}}$

⇒The composition , decomposition or displacement of molecules of matter during chemical change is called chemical reaction.

▪️ $\underline{ \bold{ \sf{ \purple{ \: Further \: more \: explanation}}}}$

Various conditions bring about these changes. The chemical reactions are represented by chemicalequation. The compounds or elements that take part in chemical reaction are called reactant. They are written at the left side of an arrow that represent a change while the compound or elements that formed after the chemical change are called product. They are written at the right side of the arrow.

▪️ $\underline{ \bold{ \sf{ \purple{For \: example}}}}$

When nitrogen reacts with hydrogen to form ammonia :

Nitrogen + Hydrogen ⇒ Ammonia

N₂ + 3H₂ ⇒ 2NH₃

Presentation of a chemical reaction in the form of equation is called chemical equation . Chemical equation may be word equations or formula equations.

Hope I helped!

Best regards!!

3 0

2 years ago

How many atoms of oxygen are in 4.00 moles of N2O5

SVETLANKA909090 [29]

Answer:

there are 20 oxygen atoms in 4.00 moles of Dinitrogen pentoxide

Explanation:

there are 2 atoms in an oxygen molecule , so each oxygen molecules has at least 2. Dinitrogen pentoxide is N2O5, which has 7 atoms, 2 nitrogen and 5 oxygen. 1 molecule of N2O5 has 5 oxygen atoms, so 4 of then would be 20

8 0

2 years ago

Calculate the number of moles found in 3.045x1024 atoms of helium. PLS HELP

Kisachek [45]

Explanation:

so for this u have to use this equation where

Moles = number of particle/6.02×10^23

= 3.045 × 10^24/6.02×10^23

= 5.0581

write it to 3 S.F so 5.06 moles

4 0

2 years ago