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3 years ago

Please help asap!! will give brainliest if right.

Chemistry

2 answers:

Nutka1998 [239]3 years ago

7 0

Answer:

1st answer is right

Explanation:

nuclear reaction takes place when number of proton or neutron changes in a nucleus forming new products

for eg uranium goes nuclear reaction and gives thorium

yarga [219]3 years ago

3 0

Answer:

It is a nuclear reaction because the identity of elements changes when there is a change in the number of protons and neutrons.

Explanation:

the other guy needs a brainliest

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Help!!! ASAP helppppp

qwelly [4]

Answer:

Lakes

Explanation:

Because oceans aren't fresh water

7 0

3 years ago

In one experiment, the reaction of 1.00 mercury and an excess of sulfur yielded 1.16g of a sulfide of mercury

Nuetrik [128]

<u>Answer and Explanation:</u>

Mercury combines with sulfur as follows -

Hg + S = HgS

Hg = 200,59

S = 32,066 Therefore 1.58 g of Hg will react with -

1.58 multiply with 32,066 divide by 200,96 of sulfur.

= 0.25211 g S

This will form 1.58 + 0.25211 g HgS = 1.83211 g HgS

The amount of S remaining = 1.10 - 0.25211 = 0.84789 g

5 0

3 years ago

Crude oil may contain hundreds of different types of hydrocarbons. Some examples include: Butane(C4H10) Dodecane (C12H26) Octane

Klio2033 [76]

Answer:

The answer to your question is below

Explanation:

Material Classification Reason

Crude oil Mixture Because we know that crude oil

is composed of different substances.

Butane Compound Because it is composed of carbon

and hydrogen

Dodecane Compound Because it is composed of carbon

and hydrogen.

Octane Compound Because it is composed of carbon and

hydrogen.

Benzene Compound It is also composed of carbon and

hydrogen.

Gasoline Mixture It is a combination of hydrocarbons

Kerosene Mixture It is a combination of hydrocarbons

Oxygen Element We can find it in the periodic table.

Carbon dioxide Compound It is composed of carbon and oxygen.

Water Compound It is composed of hydrogen and

oxygen.

8 0

4 years ago

Read 2 more answers

You find a little bit (0.150g) of a chemical marked Tri-Nitro-Toluene. Upon complete combustion in oxygen, you collect 0.204 g o

Elan Coil [88]

Answer:

The empirical formula is C7H5N3O6

Explanation:

Step 1: Data given

Mass of sample = 0.150 grams

Mass of CO2 = 0.204 grams

Molar mass CO2 = 44.01 g/mol

Mass of H2O = 0.030 grams

Molar mass H2O = 18.02 g/mol

Molar mass C = 12.01 g/mol

Molar mass H = 1.01 g/mol

Molar mass O = 16.0 g/mol

Step 2: Calculate moles CO2

Moles CO2 = mass CO2 / molar mass CO2

Moles CO2 = 0.204 grams / 44.01 g/mol

Moles CO2 = 0.00464 moles

Step 3: Calculate moles C

For 1 mol CO2 we have 1 mol C

For 0.00464 moles we have 0.00464 moles C

Step 4: Calculate mass C

Mass C = 0.00464 moles * 12.01 g/mol

Mass C = 0.0557 grams

Step 5: Calculate moles H2O

Moles H2O = 0.030 grams / 18.02 g/mol

Moles H2O = 0.00166 moles

Step 6: Calculate moles H

For 1 mol H2O we have 2 moles H

For 0.00166 moles H2O we have 2* 0.00166 = 0.00332 moles H

Step 7: Calculate mass H

Mass H = 0.00332 moles * 1.01 g/mol

Mass H = 0.00335 grams

Step 8: Calculate mass N

Mass N = 0.185 * 0.150 grams

Mass N = 0.02775 grams

Step 9: Calculate moles N

Moles N = 0.02775 grams / 14.0 g/mol

Moles N = 0.00198 moles

Step 10: Calculate mass O

Mass O = 0.150 grams - 0.02775 - 0.00335 - 0.0557

Mass O = 0.0632 grams

Step 11: Calculate moles O

Moles O = 0.0632 grams / 16.0 g/mol

Moles O = 0.00395 moles

Step 11: Calculate mol ratio

We divide by the smallest amount of moles

C: 0.00464 moles / 0.00198 moles =2.33

H: 0.00332 moles / 0.00198 moles = 1.66

N: 0.00198 moles / 0.00198 moles = 1

O: 0.00395 moles / 0.00198 moles = 2

For 1 mol N we have 2.33 moles C, 1.66 moles H and 2 moles O

For 3 moles N we have 7 moles C, 5 moles H and 6 moles O

The empirical formula is C7H5N3O6

5 0

3 years ago

The Solvay process is a multistep industrial process used to produce washing soda, Na2CO3(s). In the last step of the Solvay pro

olganol [36]

Its IUPAC name is sodium carbonate. It is also known as soda ash. It is the water soluble sodium salt of carbonic acid and occurs as a crystalline heptahydrate. Sodium carbonate has an alkaline taste and when in solution forms a basic solution. One important application is that it is used commonly as a water softener.

6 0

3 years ago