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DaniilM [7]
3 years ago
6

What is the law of multiple proportions

Chemistry
1 answer:
dmitriy555 [2]3 years ago
7 0
When two element combine to form more than one compound i hope this helps you with work have a nice day :)
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When the trough of one wave overlaps the crest of another wave it is called ___________ interference.
tatuchka [14]

Answer:

destructive interference?

Explanation:

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2 years ago
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How to keep pipes from freezing during power outage?.
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Answer: <em>Running water, even at a trickle, helps prevent pipes from freezing. If you decide to use fuel-burning equipment, such as a kerosene heater, ensure it is vented to outside and kept clear of any vents. Keep garage doors closed if there are water supply lines in the garage.</em>

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A gaseous substance turns directly into a solid. Which term describes this change?
UkoKoshka [18]

Answer:

deposition

Explanation:

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eveporation- a liquid transformimg into a gas

melting- a solid transforming into a liquid

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3 years ago
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Reactions are classified as either exothermic or endothermic. . ____________ reactions feel hot (e.g., a burning campfire), wher
creativ13 [48]

Answer:

Exothermic reactions feel hot

Endothermic reactions feel cool

Explanation:

In an exothermic reaction, heat is given out by the system. The energy of the reactants is greater than that of the products hence the excess energy is given off as heat. The reaction vessel feels hot.

In an endothermic reaction, the energy of products is greater than that of the reactants hence energy is taken into the system and the reaction vessel feels cool.

7 0
3 years ago
Complete the balanced molecular chemical equation for the reaction below. If no reaction occurs, write NR after the reaction arr
Nostrana [21]

Answer: Pb(NO_3)_2(aq)+2KI(aq)\rightarrow PbI_2(s)+2KNO_3(aq)

Explanation:

A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.

The double displacement reaction in which one of the product is formed as a solid is called as precipitation reaction.

The balanced molecular equation is:

Pb(NO_3)_2(aq)+2KI(aq)\rightarrow PbI_2(s)+2KNO_3(aq)

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3 years ago
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