3 years ago

What type of change occurs during a chemical reaction?

Chemistry

1 answer:

posledela3 years ago

8 0

Answer:

physical change.

Explanation:

because it changes its physical attributes

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What will be the volume of a gas sample at 337 K if its volume at 237 K is 12.0 L? Round your answer to 1 digit after the decima

oksano4ka [1.4K]

Answer:

17.1 L

Explanation:

V1/T1=V2/T2

V2=(V1*T2)/T1

V2= (12.0L * 337K)/237K

V2=17.1L

7 0

4 years ago

4.80 x 10^25 formula units pf calcium iodide (Cal2) will have what mass?

maw [93]

Answer:

mass CaI2 = 23.424 Kg

Explanation:

From the periodic table we obtain for CaI2:

⇒ molecular mass CaI2: 40.078 + ((2)(126.90)) = 293.878 g/mol

∴ mol CaI2 = (4.80 E25 units )×(mol/6.022 E23 units) = 79.708 mol CaI2

⇒ mass CaI2 = (79.708 mol CaI2)×(293.878 g/mol) = 23424.43 g

⇒ mass CaI2 = 23.424 Kg

7 0

4 years ago

Can someone plz help me?

hichkok12 [17]

C would be the answer

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4 years ago

What is the electron dot structure for beryllium and oxygen when they combine into a compound

Shtirlitz [24]

Answer:

The formula unit for beryllium oxide is BeO

Explanation:Mark me as brainliest

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3 years ago

A gas occupies 18.7 L at standard temperature. What is its volume at 200.5 °C

nexus9112 [7]

Answer:

32.4 L

Explanation:

Note 1:

The Standard Temperature and Pressure (STP) is defined by IUPAC as air at 0 gradius Celcius and 1 bar.

Note 2:

The Ideal Gas Law is used for solving this problem.

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Please see the step-by-step solution in the picture attached below.

Hope this answer can help you. Have a nice day!

7 0

4 years ago