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Marat540 [252]
3 years ago
15

Which determine the charge of an atom?

Chemistry
1 answer:
Andre45 [30]3 years ago
8 0

Answer:

the answer is B its the number of protons and neutrons

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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. wha
g100num [7]

 

The volume of the flask would simply be equal to the volume of the water. And the mass of the water would be the difference after and before weigh.

mass of water = 489.1 g – 241.3 g

mass of water = 247.8 g

 

Therefore the volume of water (which is also the volume of the flask) is:

volume = 247.8 g / (1.00 g/cm^3)

volume = 247.8 cm^3

 

The total mass of the flash when filled with chloroform would be:

total mass with chloroform = 241.3 g + 247.8 cm^3 (1.48 g/cm3)

total mass with chloroform = 608.04 g

 

 

Answers:

volume = 247.8 cm^3

total mass with chloroform = 608.04 g

4 0
3 years ago
Calculate the density from the following information: A red block had a mass of 15.7 g. It was placed into a graduated cylinder
matrenka [14]

Answer:

Density should be 8.5

Explanation:

When you subtract 17.2-10.0 for water displacement you get 7.2 which is the volume and you divide it by 15.7 so your equation will be 15.7/7.2 = 8.5

4 0
3 years ago
What would happen if a cell membrane let too much water into a cell?
Sloan [31]

Answer:

<u>Animal Cell</u>

  • When water moves into an animal cell (e.g. a red blood cell), the cell membrane stretches and the cell gets bigger. If this continues, the cell membrane will burst – this is called lysis.

<u>Plant Cell</u>

  • When too much water moves out of a plant cell the cell contents shrink. This pulls the cell membrane away from the cell wall. A plasmolyzed cell is unlikely to survive.

8 0
3 years ago
Read 2 more answers
How many grams of Li are there in 1.39 moles of Li?
Ulleksa [173]

Answer:

6.941 grams

Explanation:

The molecular formula for Lithium is Li. The Si base unit for amount of substance is mole. 1 mole is equal to 1 moles Lithium, or 6.941 grams

5 0
3 years ago
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What shows an atom correctly?
castortr0y [4]

Answer:

B

Explanation:

Atom consists of proton and neutron in center (often referred as nucleus) and electrons circling those things.

5 0
3 years ago
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