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Wewaii [24]
3 years ago
15

Which is a statement of cell theory? All cells are made up of living molecules. All plants are made of cells. All animals are ma

de of cells. All cells are produced from other cells.
Chemistry
1 answer:
erastovalidia [21]3 years ago
4 0

Answer:

all cells are produced from other preexisting cells through cell division

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What is the molarity of a solution in which 0.321 g of calcium chloride is dissolved in 1.45 L water?
lana66690 [7]

Answer:

Molarity = 0.002 M

Explanation:

Given data:

Mass of calcium chloride = 0.321 g

Volume of water = 1.45 L

Molarity of solution = ?

Solution:

Molarity = number of moles / volume in litter.

We will calculate the number of moles of calcium chloride first.

Number of moles = mass/molar mass

Number of moles = 0.321 g/ 110.98 g/mol

Number of moles = 0.003 mol

Molarity:

Molarity = 0.003 mol / 1.45 L

Molarity = 0.002 M

7 0
3 years ago
#1: The average velocities of gas molecules in cylinders A, B, C, and D are 20 m/s, 50 m/s, 60 m/s, and 100 m/s, respectively. T
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Cylinder D
temperature is the measurement of average kinetic energy of a sunstance. since cylinder D has the highest average velocity, it has the highest average kinetic energy among the 4 cylinders, thus cylinder D is the hottest.
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3 years ago
What is the freezing point in °C) of a 0.743 m
lesantik [10]

Answer:

-0.276 Degrees C

Explanation:

kf of water is 1.86

Freezing point depression= m x kf x i

i= ions present ( K+ Cl-) 1=2

1.86x2X.743= .276

Since its freezinf point depression the freezing point will lower

so

0-.276= -.276

7 0
3 years ago
Aluminum reacts with a certain nonmetallic element to form a compound with the general formula AIX; where element X is a diatomi
lora16 [44]

Explanation:

I thought oxygen

mark me a brain list

6 0
3 years ago
Dr. Alexander Winemann is a ________ist who specializes in organic chemistry.
Vlad [161]
Winneman is a chemist
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3 years ago
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