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sineoko [7]
4 years ago
8

This ain’t Chem but it whatever please do this if anybody can :) (all please)

Chemistry
1 answer:
Evgen [1.6K]4 years ago
8 0

Answer:

8. A golf ball feels heavier than a table-tennis ball because a golf ball is denser; that is, it has more mass in a similar volume.

10.

The density of the unknown substance is 10.50 g/mL. According to the table, the substance that has the same amount of density is silver. Therefore, the unknown substance is silver.

Explanation:

I'll leave the rest to other people

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Luisa has two older brothers and a younger sister. She had been learning about how to describe the ages of rocks. After thinking
11Alexandr11 [23.1K]

Answer:

c. relative age

Explanation:

Relative age is a method of describing the age of rocks based on their order of appearance in the geologic column.

Events are denoted by their position in the column.

  • The premise of most of the assumptions used relative age determination is based on stratigraphic laws.
  • Absolute age gives numeric ages to rocks.

Since Luisa is comparing the age of people based on their position in her family, she is using the concept of relative dating.

4 0
3 years ago
Give the chemical symbols for the following elements: (a) potassium, (b) tin, (c) chromium, (d) boron,(e) barium, (f) plutonium,
Ilia_Sergeevich [38]

Answer:

A) Alkili Metal

B) Basic Metal

C)  Transition Metal

D) Semimetal

E) Alkiline Earth

F) Actinide

G) Nonmetal

H) Noble Gas

I) Transitional Metal  

Hope This Helps

8 0
4 years ago
What is the density of a solid that has a mass of 100g and a volume of 25mL.?
Arte-miy333 [17]

Answer:

D = 4 g/mL

General Formulas and Concepts:

Density = Mass over Volume

  • D = m/V

Explanation:

<u>Step 1: Define</u>

m = 100 g

V = 25 mL

D = unknown

<u>Step 2: Find D</u>

  1. Substitute:               D = 100 g/25 mL
  2. Evaluate:                  D = 4 g/mL
7 0
3 years ago
What volume of ammonia in liters, at STP, can be produced from 2.0 kg of hydrogen gas, H2, and an excess of nitrogen gas, N2? N2
Sonbull [250]
Ok so rewrite the equation for yourself :).

N2 + 3H2 -> 2NH3 (Always check if it is balanced).

Ok so we have 2kg of hydrogen conver this to grams and then to moles.
2kg -> 2000g
2000g divide by R.M.M of H2
R.M.M
2H - 2 * 1 -> 2
2000/2 - 1000 moles.
Look at the ratio of H2 to 2NH3.
We see that we get 2NH3 for every H2 therefore the ratio is 1:2.
This means that we HAVE 2000 moles of 2NH3.
At stp. we know that 1 moles = 22.4 Litres
We have 2000 moles that means that we produce 44800 litres of NH3 at stp.
2000 * 22.4 - 44800
Hope this helps :).

4 0
3 years ago
what two variables is acceleration dependent on? what is the relationship between these variables and acceleration?
Citrus2011 [14]
Acceleration (change of movement) of an object is dependent on the net force acting on it and its mass.

The relationship between acceleration (a), force (f) and mass (m) is given by the Second Lay of Newton: f = m * a.

Note that the force, f, is the net force acting on the objetct.

I hope this help you.


8 0
3 years ago
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