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artcher [175]
4 years ago
5

A quantity must be divided by multiples of ten when converting from a larger unit to a smaller unit.

Chemistry
2 answers:
nikdorinn [45]4 years ago
4 0

Answer: true

Explanation:

Cuz I’m smart

kolbaska11 [484]4 years ago
3 0

Answer:

False

Explanation:

I just took the test.

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Explanation:

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It has been proposed that North America is moving west 2cm per year. How many kilometers would it move in 5,000 years?
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7 0
3 years ago
Giving brainliest ✅✅
34kurt

Answer:

A

Explanation:

A common example of heterogeneous catalysis is the hydrogenation reaction of simple alkenes. The conversion of ethene (C2H4) to ethane (C2H6) can be performed with hydrogen gas in the presence of a metal catalyst such as palladium (“Conversion of Ethene to Ethane with Hydrogen and a Metal Catalyst”).

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3 years ago
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Solid calcium carbide, CaC2, reacts with water to form an aqueous solution of calcium hydroxide and acetylene gas, C2H2. Express
Lina20 [59]

Answer:  CaC_2(s)+H_2O(l)\rightarrow Ca(OH)_2(aq)+C_2H_2(g)

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The solutions 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. Liquids are represented by (l) and gases are represented by (g).

The balanced chemical reaction is:

CaC_2(s)+2H_2O(l)\rightarrow Ca(OH)_2(aq)+C_2H_2(g)

4 0
3 years ago
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