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storchak [24]
3 years ago
8

1. What do the ice ages tell us about how Earth's climate has changed in the past?

Chemistry
1 answer:
Levart [38]3 years ago
3 0

Answer:

During ice ages, the most characteristic change to the planet has been the formation and spread large ice sheets and glaciers across much the Northern Hemisphere.

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How many grams of CH4 will be in a 500ml contain at STP?
ArbitrLikvidat [17]

Answer:

Mass = 0.32 g

Explanation:

Given data:

Mass of CH₄ = ?

Volume of CH₄ = 500 mL (500 mL× 1L/1000 mL= 0.5 L)

Temperature = 273 K

Pressure = 1 atm

Solution:

Volume of CH₄:

500 mL (500 mL× 1L/1000 mL= 0.5 L)

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

By putting values,

1 atm× 0.5 L = n×0.0821 atm.L/ mol.K  × 273 K

0.5 atm.L = n×22.4 atm.L/ mol

n = 0.5 atm.L / 22.4 atm.L/ mol

n = 0.02 mol

Mass in gram:

Mass = number of moles × molar mass

Mass = 0.02 mol × 16 g/mol

Mass = 0.32 g

7 0
3 years ago
Which describes the way a convection current moves? A in a spiral B in a line C in a loop
Vadim26 [7]

Answer:

C a loop

Explanation:

5 0
3 years ago
Read 2 more answers
Calculate the density of an object with a mass of 220 and a volume of 145mL.
LiRa [457]

Answer:

1.52 g/mL

Explanation:

The formula for finding the density of an object is d = m/v, or density = mass divided by volume.

Therefore, we can input the two values and solve for d.

d = 220/145

d = 44/29

d ≈ 1.52 g/mL

8 0
3 years ago
A stiff outer layer that helps the cell hold its rigid shape. Can be made
nevsk [136]
I just got this question and it was lipids sorry if i’m wrong
8 0
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What creates the Van Allen belts?
Sav [38]

Answer:

The answer is C, which is Earth's magnetosphere.

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3 years ago
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