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2 years ago

I need help with this science!

Chemistry

2 answers:

o-na [289]2 years ago

6 0

Answer:

Scientists classify living things at eight different levels: domain, kingdom, phylum, class, order, family, genus, and species. In order to do this, they look at characteristics, such as their appearance, reproduction, and movement, to name a few.

Explanation:

Eddi Din [679]2 years ago

3 0

Answer:

All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these characteristics serve to define life.

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When reacting 45g of magnesium with oxygen, 50.0g of magnesium oxide is produced. Calculate the theoretical yield and percent yi

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3 years ago

If polar covalent bonding results in a molecule with a positively-charged end and a negatively-charged end, the molecule is call

nasty-shy [4]

If polar covalent bonding results in a molecule with a positively-charged end and a negatively-charged end, the molecule is called D. a dipole.

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3 years ago

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Chlorine gas will effuse more quickly than ammonia gas. a. true b. false

rjkz [21]

This statement is false due to the fact that the ammonia gas has the lower molar mass.
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8 0

3 years ago

How many moles are in 5.67x10^24 atoms of RbCl?

Mademuasel [1]

Answer:

<h2>9.42 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

$n = \frac{N}{L} \\$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

$n = \frac{5.67 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 9.418604...$

We have the final answer as

<h3>9.42 moles</h3>

Hope this helps you

4 0

3 years ago

imagine you have four food dyes to test A, B, C and D imagine that you are going to investigate which food dye diffuses more qui

Lady_Fox [76]

Answer:

You will change which food dye is used. You will measure how quickly the dyes diffuse. You could use a timer to see how long the dye takes to completely diffuse.

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3 years ago