3 years ago

Explain how a convection current transports energy around the globe

Chemistry

1 answer:

Mandarinka [93]3 years ago

7 0

<span>Water at the oceans surface absorbs energy from the sun currents carry this energy to cool regions </span>

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How many grams are in 5.2 moles of Li2SO4

skelet666 [1.2K]

Answer:

572 g

Explanation:

Molar mass is the mass of 1 mol of an element or compound

molar mass of Li₂SO₄ is the sum of the products of the molar masses of the elements by the number of atoms in the compound

molar masses of each element making up lithium sulphate

Li - 7 g/mol

S - 32 g/mol

O - 16 g/mol

molar mass of Li₂SO₄ - (7 g/mol x 2) + ( 32 g/mol x 1) + ( 16 g/mol x 4 )

molar mass = 110 g/mol

mass of 1 mol of Li₂SO₄ is 110 g

therefore mass of 5.2 mol of Li₂SO₄ is - 110 g/mol x 5.2 mol = 572 g

mass is 572 g

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3 years ago

Which of the following would be the best representation of input energy and then

Rom4ik [11]

A is the correct answer

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3 years ago

the half life for strontium-90 is 29 years. how many half-lives did the sample go through at the end of 87 year

Nesterboy [21]

90 divided by 29 x 87 = 290

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2 years ago

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If a block has the mass of 15.00 grams and measurements of 5.00cm by 3.00cm by 2.00cm what is the volume of the block?

Natalija [7]

Answer:

Volume = 30cm³

Explanation:

A block is a geometrical figure and its volume, -look at the figure-, follows the equation:

Volume = Width*Length*Height

As the measurements of the block are 5.00cm, 3.00cm and 2.00cm, the volume is:

Volume = 5.00cm*2.00cm*3.00cm

<h3>Volume = 30cm³</h3>

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3 years ago

When shopping for major appliances, people should look for high energy-rating numbers because those items _____.

madam [21]

The answer would be :Use less energy

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