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Vikentia [17]
3 years ago
8

Two forces are described below: Force 1: The force with which Earth pulls a person to its center Force 2: The pulling force appl

ied on a door to open it Which statement is true about the forces? A) Both are contact forces. B) Both are non-contact forces. C) Force 1 is a contact force and Force 2 is a non-contact force. D) Force 1 is a non-contact force and Force 2 is a contact force. PLEASE HELP
Chemistry
2 answers:
navik [9.2K]3 years ago
5 0

Answer:

It is D

Explanation:

Gravitational Force does not implie to have contact or if you want an easier explanation. Gravity doesn't touch you to move you.

Though you do need physical contact to open a door, because you are touching it!

spin [16.1K]3 years ago
4 0

Answer:

the correct answer is D

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How many atoms are in 1.0 formula units of magnesium acetate?
Ray Of Light [21]

Answer:

15

Explanation:

Magnesium Acetate Mg(C2H3O2)2

Number of atoms:

Carbon = 4

Hydrogen = 6

Magnesium = 1

Oxygen = 4

Total = 15

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3 years ago
Francis is learning about dissolving at school. She reads descriptions about the rate of dissolving from four of her friends.
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54.56 g of water at 80.4 oC is added to a calorimeter that contains 47.24 g of water at 40 oC. If the final temperature of the s
fomenos

Answer:

49.5J/°C

Explanation:

The hot water lost some energy that is gained for cold water and the calorimeter.

The equation is:

Q(Hot water) = Q(Cold water) + Q(Calorimeter)

<em>Where:</em>

Q(Hot water) = S*m*ΔT = 4.184J/g°C*54.56g*(80.4°C-59.4°C) = 4794J

Q(Cold water) = S*m*ΔT = 4.184J/g°C*47.24g*(59.4°C-40°C) = 3834J

That means the heat gained by the calorimeter is

Q(Calorimeter) = 4794J - 3834J = 960J

The calorimeter constant is the heat gained per °C. The change in temperature of the calorimeter is:

59.4°C-40°C = 19.4°C

And calorimeter constant is:

960J/19.4°C =

<h3>49.5J/°C</h3>

<em />

7 0
3 years ago
When an electr ic cur rent is passed through water , two colou r less gases are produced. When hydrogen gas makes a po pping sou
kumpel [21]

The lysis reaction with the formation of two different gases, and the synthesis reaction with the reaction of hydrogen and oxygen support that water is a compound and not an element.

<h3>What is electrolysis?</h3>

The electrolysis is the analytical process for the separation or the deposition of the element in the presence of the electric field.

The passing of electric current through water results in the release of two types of gases. Thus, it can be said that water lysis or breakdown forms the release of two elements hydrogen and oxygen supporting the fact that water is a compound and not an element.

The production of water is found to be formed with the reaction of hydrogen with oxygen. Thus it supports that water is a compound and, not an element.

Learn more about electrolysis, here:

brainly.com/question/12054569

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5 0
2 years ago
Just need the two blanks filled :)
Anestetic [448]

Answer:

Dont answer this question its an online exam question

Explanation:

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3 years ago
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