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goldenfox [79]
3 years ago
11

During an experiment, a student observes the formation of a precipitate. Why does this indicate that a chemical reaction is like

ly occurring?
A solid forms, and there is a change of color.
A gas forms, and there is a change of color.
A solid forms, and light is emitted.
A gas forms, and light is emitted.
Chemistry
2 answers:
mylen [45]3 years ago
3 0

Answer:

a solid forms, and there is a change of color.

Explanation:

Ray Of Light [21]3 years ago
3 0
Solid forms, there is a change of color when in the context of precipitation.
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Identify the reactant and products in the following chemical reaction: CH4 + 2O2 ➡ CO2 + 2H2O
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The reactants are methane and oxygen.

The products are carbon dioxide and water.

6 0
3 years ago
The center on your school’s basketball team is 6 ft 10 in tall. How tall is the player in millimeters (mm)?
svp [43]

The answer is 6 ft 10 inches in millimeters (mm) is 0.833 ft.

Given,

The center of the school's basketball team is 6 ft 10 inches tall.

We have to convert the height of the player from feet and inches to feet.

Using the conversion factor,

1 ft = 12 inches

or, 12inches/ 1 ft

Converting 6ft 10 inches to ft, we get;

10 inches × 1 ft/ 12inches

= 0.833 ft

Therefore 6 ft 10 inches in millimeters (mm) is 0.833 ft.

Unit conversion is a method in which we multiply or divide with a particular numerical factor and then finally round off to the nearest significant digits.

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5 0
2 years ago
In an atomic model that includes a nucleus, positive charge is
olganol [36]
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7 0
3 years ago
20 poll
aleksley [76]

Answer: n=15.56moles

Explanation:

PV = nRT

where  

P is pressure in atmospheres

V is volume in Liters

n is the number of moles of the gas

R is the ideal gas constant = given as (0.0821L -atm/k-mol

PV = nRT

n= PV/RT

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n= 15.56 moles

5 0
4 years ago
Are protons and neutrons the same size? Explain.
Ivahew [28]

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4 0
3 years ago
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