3 years ago

Help please if its right i'll give brainiest

Chemistry

1 answer:

Mkey [24]3 years ago

5 0

I believe it is spontaneous generation

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Consider the temperature versus time graph below. I which region is the substance in both the solid phase and the liquid phase?

SVEN [57.7K]

Answer:

Explanation:

The change of state occurs at a constant temperture and pressure. In the grahp we can see while the time passes, the temperature doesn't change.

The rect number 4 correspond to a liquid-gas phase

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3 years ago

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Convert 13.4 degrees celcius into kelvin

Alenkasestr [34]

Answer:

286.55K

Explanation:

To convert to kelvin , add 237 .15

$13.4\°C + 273.15 = 286.55K$

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3 years ago

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What is the hydrogen ion concentration of a solution with pH=8.25 ?

77julia77 [94]

Answer:

The answer is

<h2> $5.62 \times {10}^{ - 9} \: M$ </h2>

Explanation:

The pH of a solution can be found by using the formula

$pH = - log( {H}^{ + } )$

where

${H}^{ + }$ is the hydrogen ion concentration of the solution

From the question

pH = 8.25

The hydrogen ion concentration of the solution is

$8.25 = - log( {H}^{ + } )$

<u>Find antilog of both sides</u>

That's

${H}^{ + } = {10}^{ - 8.25} \\ = 5.62 \times {10}^{ - 9} \: M$

We have the final answer as

$5.62 \times {10}^{ - 9} \: M \\$

Hope this helps you

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3 years ago

Convert 150.0 g to mg.

tatyana61 [14]

There are 1000 milligrams in a gram, so you can find the answer through multiplication: 150 • 1000

The answer is 150,000

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4 years ago

Can someone help me?

NeX [460]

Answer:

sorry idk chem

Explanation:

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