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3 years ago

True or False:

Chemistry

2 answers:

bezimeni [28]3 years ago

7 0

The answer is B, false

Debora [2.8K]3 years ago

5 0

B, false because it's pretty much still water, you melt the ice and it'll turn back to water so that's only a physical change

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What happens when muscle cells are triggered?

BartSMP [9]

Answer:

calcium ions are released from its store inside the sarcoplasmic reticulum, into the sarcoplasm (muscle ).

Explanation:

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2 years ago

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True or False;<br> aa is faster moving lava than pahoehoe?

frosja888 [35]

Answer:

It is false :l

Explanation:

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3 years ago

The pOH of a solution of KOH is 11.30. What is the [H*] for this solution?

Sloan [31]

Answer: The concentration of hydrogen ions for this solution is $1.99 \times 10^{-3}$ .

Explanation:

Given: pOH = 11.30

The relation between pH and pOH is as follows.

pH + pOH = 14

pH + 11.30 = 14

pH = 14 - 11.30

= 2.7

Also, pH is the negative logarithm of concentration of hydrogen ions.

$pH = - log [H^{+}]$

Substitute the values into above formula as follows.

$pH = -log [H^{+}]\\2.7 = -log [H^{+}]\\conc. of H^{+} = 1.99 \times 10^{-3}$

Thus, we can conclude that the concentration of hydrogen ions for this solution is $1.99 \times 10^{-3}$ .

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3 years ago

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I’ve been having problems too honestly lol

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3 years ago

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Which of the following are evidence that chemical change has occurred

dolphi86 [110]

Answer:

gas given off

Explanation:

that's the answer

3 0

3 years ago