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gayaneshka [121]
2 years ago
11

HELP ME OUT PLS!!!!!

Chemistry
1 answer:
RUDIKE [14]2 years ago
8 0

Answer:

C

Explanation:

Well Its called reaction force,  so that helps you figure out what direction she would go towards. When you use anything that has reaction force what way are they normally going? So thats why she stayed still.

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A student has two objects. Object 1 has a mass of 28 g and a volume of 12 cubic
bearhunter [10]

Answer:

Object 2 with a density of 0.68

Explanation:

object 2 has a lower density than water so it will float

8 0
3 years ago
The molecule ch3-ch2-ch2-ch2-ch2-ch2-ch3 is best described as a(n) ________.
Gwar [14]

Given molecule:

CH3-CH2-CH2-CH2-CH2-CH2-CH3

- The molecule contain only C and H atoms, hence it is a hydrocarbon

- The C atoms in the linear chain are linked together by carbon-carbon single bonds, hence it is a saturated compound

- It has 7 C atoms and 16 H atoms, hence the molecular formula is C7H16

-The molecular formula can be generally represented as CnH2n+2 where n = 7. This corresponds to the general molecular formula for alkanes

The given molecule is best described as an <u>alkane</u>


7 0
3 years ago
What happens if 2 hydrogen and 1 oxygen atoms are combined?
Wittaler [7]

Hello There!

We will have water (H2O)

So if you drink a glass of water, you drink a glass of H2O.

Hope it helps! :)

GraceRosalia here to help you :)

8 0
2 years ago
Read 2 more answers
How many moles of KF would need to be added to 2500 ml of water to make 1.2 M solution?
Oduvanchick [21]

The number of moles of KF needed to prepare the solution is 3 moles

<h3>What is molarity?</h3>

Molarity is defined as the mole of solute per unit litre of solution. Mathematically, it can be expressed as:

Molarity = mole / Volume

<h3>How to determine the mole of KF </h3>
  • Volume = 2500 mL = 2500 / 1000 = 2.5 L
  • Molarity = 1.2 M
  • Mole of KF =?

Molarity = mole / Volume

1.2 = mole of KF / 2.5

Cross multiply

Mole of KF = 1.2 × 2.5

Mole of KF = 3 moles

Learn more about molarity:

brainly.com/question/9468209

#SPJ1

4 0
2 years ago
Which of th following is an example of how scientist might use a model?
Gemiola [76]
C. marbles placed inside hollow sphere
8 0
3 years ago
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