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Nady [450]
3 years ago
14

A chemistry student answered 81 questions correctly on a 90-question test. What

Chemistry
1 answer:
nika2105 [10]3 years ago
8 0

Answer:

90%

Explanation:

it will be 81/90 ×100/1

81 over 90 × 100 over 1

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The elements fluorine, chlorine, and iodine are all part of the same __________ on the periodic table.
Assoli18 [71]
Group because groups go straight down and periods go across.
3 0
3 years ago
the density of an object is 4.78 g/ml . if the object has a mass of 2.34. determine the volume of the object
laila [671]

Answer:

<h3>The answer is 0.49 mL</h3>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density} \\

From the question

mass = 2.34 g

density = 4.78 g/mL

We have

volume =  \frac{2.34}{4.78}  \\  = 0.4895397...

We have the final answer as

<h3>0.49 mL</h3>

Hope this helps you

5 0
3 years ago
Solutions that are basic are also called what?
vivado [14]

Explanation:

A basic solution is an aqueous solution containing more OH-ions than H+ions. In other words, it is an aqueous solution with a pH greater than 7. ... Examples of common basic solutions include soap or detergent dissolved in water or solutions of sodium hydroxide, potassium hydroxide, or sodium carbonate.

8 0
3 years ago
A cylinder at left with balls evenly spaced throughout the cylinder has an arrow leading to a cylinder at right cylinder with ba
Lelechka [254]

gas to liquid

Explanation:

The change of state indicated by this analogy is from gas to liquid.

Cylinder to the left is filled with gases

Cylinder to the right is made up of liquid.

  • Gases occupy the volumes of containers they are introduced into.
  • They are random and possess a high kinetic energy.
  • Liquids have definite volume and flow with one another.
  • The gases in A are dispersed and in random motion.
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learn more:

Phase change brainly.com/question/1875234

#learnwithBrainly

7 0
3 years ago
Read 2 more answers
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Phantasy [73]
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6 0
3 years ago
Read 2 more answers
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