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2 years ago

Question 1-19

1 answer:

7 0

The experiment involving the determination of the number of ice cubes required to keep the temperature of the glass under 15 degrees Celcius, the following things have to be kept in mid:

The<u> temperature</u> of the surroundings
The initial temperature of the <u>glass</u>
The <u>number of ice cubes </u>added to the water in the glass

In order to keep into consideration the changing environmental temperatures (which is a variable in the experiment), the experiment had to be conducted daily to get <u><em>accurate results </em></u>keeping into consideration all the factors.

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3 years ago

If an object has a mass of 180 g and a density of 6 g/cm^3, what is the volume of the object?

cupoosta [38]

Answer:

<h3>The answer is 30 cm³</h3>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

$volume = \frac{mass}{density} \\$

From the question

mass = 180 g

density = 6 g/cm³

We have

$volume = \frac{180}{6} \\$

We have the final answer as

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3 years ago

5. Calcium carbonate decomposes at 12000 C to form carbon dioxide and calcium oxide. If 25 liters of carbon dioxide are collecte

Anika [276]

Answer:

5)0.53liters

6)1.634.6°c

Explanation:

$using \: charles \: law \\ v1 \div t1 = v2 \div t2$

5) v1=25liters, t1=12000°c. v2=?, t2=250°c

v2=(250×25)/12000

v2=6250/12000

v2=0.52liters

6)v1=130,v2=85, t1=2500, t2=?

t2=(85×2500)/130

t2=212500/130

t2= 1634.6°c

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2 years ago