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dimulka [17.4K]
3 years ago
14

What is the mass of 42.0 mL of a liquid with a density of 1.65 g/mL?

Chemistry
1 answer:
OverLord2011 [107]3 years ago
5 0

Answer:

The answer is

<h2>69.30 g</h2>

Explanation:

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

<h3>mass = Density × volume</h3>

From the question

volume = 42 mL

density = 1.65 g/mL

The mass is

mass = 1.65 × 42

We have the final answer as

<h3>69.3 g</h3>

Hope this helps you

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you are riding in a train that is traveling at a speed of 120km/h how long will it take to travel 950km
muminat

The time take for the train to travel 950 Km is 7.92 h

<h3>What is speed? </h3>

Speed is the distance travelled per unit. Mathematically, it can be expressed as:

Speed = distance / time

With the above formula, we can determine the time. Details below:

<h3>How to determine the time</h3>

The time taken for the train t travel 950 Km can be obtained as follow:

  • Speed = 120 Km/h
  • Distance = 950 Km
  • Time =?

Speed = distance / time

120= 950 / time

Cross multiply

120 × time = 950

Divide both side by 120

Time = 950 / 120

Time = 7.92 h

Learn more about speed:

brainly.com/question/680492

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4 0
2 years ago
What are the difference between an animal cell and plant cell
Bingel [31]

Answer:

ANIMAL CELL

Animal cells are generally small in size.

They don't have a cell wall

Except the protozoan Euglena, no animal cell possesses plastids.

Vacuoles in animal cells are many, small and temporary.

Animal cells have a single highly complex and prominent Golgi apparatus.

Animal cells have centrosome and centrioles.

PLANT CELL

Plant cells are larger than animal cells.

The plasma membrane of plant cells is surrounded by a rigid cell wall of cellulose.

They have Plastids

Most mature plant cells have a permanent and large central sap vacuole.

Plant cells have many simpler units of Golgi apparatus, called dictyosomes.

Plant cells lack centrosome and centrioles.

Hope this helps!

5 0
3 years ago
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Choose all the answers that apply.
Elena-2011 [213]

Answer:

a.is the same as science

c. influences science

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Explanation:

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Tetrachloroethene, C2C14 is a solvent used in many dry cleaning processes.
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An empirical formula presents the atoms of all the elements with the most simplified whole number ratios. In other words, divide each subscript by their greatest common factor.

The greatest common factor of 2 and 4 is 2.

2/2 = 1

4/2 = 2

So, the empirical formula for tetrachloroethene is CCl₂.

6 0
3 years ago
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