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Anton [14]
3 years ago
11

If I add wheels to a cart to move it, will it have more or less friction than trying to

Chemistry
1 answer:
Studentka2010 [4]3 years ago
3 0
It would have more because without the wheels it won’t move and no friction is happening but with the wheels the wheels are rubbing against the ground creating friction ( mark brainliest pls :) )
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What happens to the density of a substance when it is heated? Explain your answer.
hoa [83]

Heating a substance causes molecules to speed up and spread slightly further apart, occupying a larger volume that results in a decrease in density. Cooling a substance causes molecules to slow down and get slightly closer together, occupying a smaller volume that results in an increase in density.

From: www.middleschoolchemistry.com

7 0
3 years ago
Why does foliation occur? (Metamorphic rock)
dusya [7]
Foliation occurs when the pressure squeezes the flat or elongated minerals within a rock so that they become aligned.
5 0
3 years ago
Read 2 more answers
A drum used to transport crude oil has a volume of 162 L. How many grams of water, as steam, are required to fill the drum at 1.
Paraphin [41]

Answer:

114.48g

Explanation:

Step 1:

Data obtained from the question:

Volume (V) = 162 L

Pressure (P) = 1.20 atm

Temperature = 100°C = 100°C+ 273 = 373K

Number of mole (n) of H2O =?

Recall:

Gas constant (R) = 0.082atm.L/Kmol

Step 2:

Determination of the number of mole of H2O i.e steam.

Using the ideal gas equation, the number of mole of H2O can be obtained as follow:

PV = nRT

1.2x 162 = n x 0.082 x 373

Divide both side by 0.082 x 373

n = (1.2x 162) /(0.082 x 373)

n = 6.36 moles

Step 3:

Determination of mass of H2O i.e steam:

This is illustrated below:

Molar Mass of H2O = (2x1) + 16 = 2 + 16 = 18g/mol

Number of mole H2O = 6.36 moles

Mass of H2O =?

Mass = number of mole x molar Mass

Mass of H2O = 6.36 x 18

Mass of H2O = 114.48g

Therefore, the mass of H2O i.e steam required to fill the drum of crude oil is 114.48g

7 0
3 years ago
3.618X 10^24 molecules of sodium hydroxide (NaOH) would also be ____ grams of NaOH
d1i1m1o1n [39]

Answer:

Mass = 240 g

Explanation:

Given data:

Number of molecules of NaOH = 3.618 × 10²⁴ molecules

Mass in grams = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen

For NaOH:

1 mole = 6.022 × 10²³ molecules

3.618 × 10²⁴ molecules × 1 mol /  6.022 × 10²³ molecules

0.6 × 10¹ moles

6 moles

Mass of NaOH:

Mass = Number of moles × molar mass

Mass = 6 mol × 40 g/mol

Mass = 240 g

4 0
3 years ago
Which of the following is not the same as 5.63 grams
finlep [7]
0.00563 grams! I hope this helps!!
4 0
3 years ago
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