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serious [3.7K]
3 years ago
7

A solid that forms when two liquids react with one another

Chemistry
2 answers:
victus00 [196]3 years ago
8 0

Combining the two clear colorless liquids is a chemical change because a different solid substance is formed. Tell students that a precipitate is an insoluble solid that forms when two solutions are combined and react chemically.

Nostrana [21]3 years ago
6 0

its a chemical reaction when a solid forms when two liquids react with one another

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The half-life of radium-226 is 1600 years. How many grams of a 0.25 g sample will remain after 4800 years?
murzikaleks [220]
The half-life of radium-226 is 1600 years. How many grams of a 0.25 g sample will remain after 4800 years?

this would be 0.03125 gram
8 0
3 years ago
Cubic centimeter is a unit used to measure what ?
Stolb23 [73]
A cubic centimetre (or cubic centimeter in US English) (SI unit symbol: cm3; non-SI abbreviations: cc and ccm) is a commonly used unit of volume that extends the derived SI-unit cubic metre, and corresponds to the volume of a cube that measures 1 cm × 1 cm × 1 cm.
5 0
2 years ago
Lawrencium-262 has a half-life of 4 hr. How much of a 40 mg sample remains after 12 hours?
CaHeK987 [17]

Answer:

5 mg

Explanation:

If one half life is 4 hours, then 3 half lives is 12 hours.

This means that the sample will decay to 1/8 of its original amount.

So, the answer is 40(1/8) = 5 mg.

3 0
2 years ago
which statement best describes the equation caco3 2hcl → cacl2 co2 h2o? caco3 is a reactant; it is present before the reaction o
fomenos

Answer: CaCO_3 is a reactant; it is present before the reaction occurs.

Explanation:

In a chemical reaction the chemical formulas written before the arrow are described as reactants as they react together to form products which are written after the arrow.

CaCO_3 + 2HCl \rightarrow CaCl_2 + CO_2 + H_2O

Thus CaCO_3 and HCl are reactants here whereas CO_2, CaCl_2 and H_2O are products.

7 0
3 years ago
Read 2 more answers
A car is traveling 70km in 45 minutes. How many miles an hour is the car traveling?
labwork [276]

52

Explanation:

70x45÷60= 52

I hope this is helpful

5 0
2 years ago
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