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enyata [817]
3 years ago
5

Can someone please help mee finish this?

Chemistry
1 answer:
zvonat [6]3 years ago
4 0

Answer:

1.Physical. People measure water by themselves.

2.Physical. People chop wood.

Explanation:

(this is all I can answer for you. you have to explain it by yourself tho.)

I dont know if I'm correct so you should double check.

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The phase change in which a substance changes from a liquid to a solid is A. freezing. B. melting. C. sublimation. D. condensati
vovangra [49]

freezing. Think of what happens when you put water in the freezer

4 0
3 years ago
Which statement best describes alpha decay?(1 point)
Veseljchak [2.6K]

Answer:

After the ejection of an alpha particle, the remaining nucleus has a mass number that is four less and an atomic number that is two less, so alpha decay is a type of nuclear fission.

6 0
2 years ago
Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coeffici
irina1246 [14]

Answer:

                     2 C₄H₁₀ + 13 O₂ → 8 CO₂ + 10 H₂O

Explanation:

Step 1: Write the unbalanced chemical equation,

                          C₄H₁₀ + O₂ → CO₂ + H₂O

Step 2: Balance Carbon  Atoms;

As there are 4 carbon  atoms on left hand side and 1 carbon atoms on right hand site therefore, to balance them multiply CO₂ on right hand side by 4 i.e.

                            C₄H₁₀ + O₂ → 4 CO₂ + H₂O

Step 3: Balance Hydrogen Atoms;

There are 10 hydrogen atoms on left hand side and 2 hydrogen atom on right hand site therefore, to balance them multiply H₂O on left hand side by 5 i.e.

                            C₄H₁₀ + O₂ → 4 CO₂ +  5 H₂O

Step 4: Balance Oxygen Atoms:

Now there are 2 oxygen atoms in reactant side and 13 in product side. So, multiply O₂ by 6.5 i.e.

                            C₄H₁₀ + 6.5 O₂ → 4 CO₂ + 5 H₂O

Step 5: Remove fraction coefficients as,

Multiply whole equation by 2 to get rid of fractions i.e.

                            2 C₄H₁₀ + 13 O₂ → 8 CO₂ + 10 H₂O

7 0
3 years ago
Give examples of:<br> chemical reactions in the kitchen.<br> • chemical reactions in living things.
Veronika [31]

chemical reactions in the kitchen

Baking soda and vinegar create carbon dioxide. In both of these cases, a chemical reaction between a solid and liquid creates a new substance, a gas. Both yeast and baking soda can be used to create a gas.

chemical reactions in living things

when you hard boil an egg, the hydrogen sulfide produced by heating the egg white can react with iron from the egg yolk to form a grayish-green ring around the yolk.

3 0
2 years ago
Read 2 more answers
Help with chemistry, 50 points
expeople1 [14]

Answer:

Thank you

I didn't wait because there is someone who will take it and there is someone who answer a wrong answer

Explanation:

4 0
2 years ago
Read 2 more answers
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