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3 years ago

12

________ is the study of matter and the energy that causes matter to combine, break apart and recombine in everything living and

non-living.

1 answer:

Kipish [7]3 years ago

8 0

Answer: Emperical formula

Explanation:

You might be interested in

A sample of gas occupies 40.0 mL at -123°C. What volume does the sample occupy at 27°C if the pressure is held constant? V1T2 =

Brums [2.3K]

Answer:

80mL

Explanation:

Step 1:

Data obtained from the question.

Initial Volume (V1) = 40mL

Initial temperature (T1) = –123°C

Final temperature (T2) = 27°C

Final volume (V2) =..?

Step 2:

Conversion of celsius temperature to Kelvin temperature.

T(K) = T(°C) + 273

Initial temperature (T1) = –123°C =

–123°C + 273 = 150K

Final temperature (T2) = 27°C = 27°C + 273 = 300K

Step 3:

Determination of the final volume.

This can be obtained as follow:

V1/T1 = V2/T2

Initial Volume (V1) = 40mL

Initial temperature (T1) = 150K

Final temperature (T2) = 300

Final volume (V2) =..?

V1/T1 = V2 /T2

40/150 = V2 /300

Cross multiply

150 x V2 = 40 x 300

Divide both side by 150

V2 = (40 x 300) /150

V2 = 80mL

Therefore, the new volume of the gas is 80mL

6 0

3 years ago

Question 1 of 10

Zepler [3.9K]

A. The pH indicates how acidic or basic a
solution is.

8 0

3 years ago

Read 2 more answers

Biochemical reactions in your cells occur best at approximately which temperature

VARVARA [1.3K]

Answer: 98.6˚F

Explanation:

3 0

3 years ago

Does all matter have chemical energy?

zlopas [31]

Answer:basically anything you can taste, smell, or hold consists of matter and is therefore a chemical.

3 0

3 years ago

An empty Erlenmeyer flask weighs 241.3 g. When filled with water (d = 1.00 g/cm³), the flask and its contents weigh 489.1 g. (a)

miskamm [114]

The answer is- Volume of flask = 247.8 $cm^3$ or 247.8 mL.

Density (d) is defined as mass of substance divided by its volume. Thus, if mass and density are known, then Volume can be determined.

What is the formula of volume in terms of density?

Let mass of substance be 'm' and volume be 'V'. Thus, as per the definition of density, it is expressed as-

$d = \frac{m}{V}$

Thus, volume can be expressed as-

$V =\frac{m}{d}$

Now, mass of empty flask = 241.3 g and the mass of (flask + Water) = 489.1 g.

Thus, mass of water = $489.1\ g- 241.3\ g = 247.8\ g$ .

Thus, mass of water = 247.8 g and density of water = $1.00\ g/cm^3$ . Its volume is calculated as-

$V = \frac{247.8\ g}{1.00\ g/cm^3}=247.8\ cm^3$

Hence, volume of flask = 247.8 $cm^3$ or 247.8 mL.

To learn more about Density and Volume, visit:

brainly.com/question/952755

#SPJ4

8 0

1 year ago