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4 years ago

Someone help me please ??

Chemistry

1 answer:

jolli1 [7]4 years ago

4 0

Okay your answer is 1 I think

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Case Study 1: What went good and what went bad in the lab scenario?

Anettt [7]

Answer:

Nothing went well.

Explanation:

Everything went badly.

Jennifer took off her goggles. The mixture was already bubbling. It could have suddenly spurted into her hands and face.
She took a good whiff of the greenish-yellow gas (chlorine?). She should have held the beaker some distance away and gently wafted some of the gas toward her nose.

6 0

3 years ago

Read 2 more answers

What first 16 elements were known in 1760

Ksju [112]

Suphur
chlorine
argon
neon
carbon
oxygen
helium
silicon
calcium
hydrogen
nitrogen
sodium
florine
lithium
aluminum

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3 years ago

Is cutting your nails a physical or chemical change

Temka [501]

Cutting of Nails is a Physical Change since no new substance is formed.
Don't confuse it with Reversible and Irreversible Changes

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3 years ago

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Lab: Absorption and Radiation by Land and Water Lab Report

Vilka [71]

Answer:

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fffffffffffffffffffffffExplanation:

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2 years ago

A sample of a compound made entirely from copper and oxygen was found to have a total mass of 0.143 g the mass of copper in the

tensa zangetsu [6.8K]

Mass of Oxygen: 0.0159 grams

Moles of Oxygen: 9.94x10^-4

To find the mass of oxygen, subtract the mass of copper from the total mass.

$0.143-0.1271=0.0159$

There are 0.0159 grams of Oxygen.

To find how many moles there are, divide the given amount of oxygen by the molar mass (atomic mass) of oxygen because that mass is the same as one mole of oxygen.

Molar mass of Oxygen: 16.00

$0.0159/16.00=9.94*10^{-4}$

There are 9.94*10^-4 moles of Oxygen.

6 0

1 year ago