CHEMISTRY HIGH SCHOOL

Ice is put into a glass of coke energy flows from ______________to________________.

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Answer 1
Answer: Coke to ice because coke has a higher temperature than ice.

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How many atoms are in 11.9 moles of chromium?

Answers

Answer:

7,16.10^(24)

Explanation:

We know that in 1 mole of any substances there are 6,02. 10^(23) atoms

This number (6,02. 10^(23)) is a constant that is known as the avogadros number

if we know how many atoms are in a mole of chromium to calculate how many there are in 11.9 moles we apply a simple rule of three

1 mol Cr\longrightarrow 6,02.10^(23) atoms\n 11.9 moles Cr\longrightarrow x\nx=((11.9)(6,02.10^(23)))/(1)\n x= 7,16.10^(24) atoms

In 11.9 moles of chrome there are 7,16.10^(24) atoms
Use the following equation:
Given # of moles *  molar mass (g) per mol = Mass (g)
This gives us 11.9 x  51.9962 (g) per mol.

618.75 moles

What is the main cause for global wind patterns?A) currents in the ocean affect the air above it

B) unequal heating of different parts of earth

C) differences in elevation on different landmasses

D) greenhouse gases

(no guessing please )
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B

sometimes the earths heating of the surface is unequal forming global wind patterns

Pls help its due in a few minutes

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Answer:

Theory

Explanation:

How does the nucleus of a copper atom compared to the nucleus of a nickel atom

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Copper has 29 protons in the nucleus, while Nickel has 28 protons.

Mixtures have strong chemical bonds true or false ?

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false Because they

A group of atoms that are held together by covalent bonds so that they move as a group

'why is a slanted paper tube considered a ramp?'

Answers

The incline could help things go up the incline plane therefore you can say it is an inclined plane. Hope this helped
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