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Pavlova-9 [17]
2 years ago
9

What is the effect of scary movies on pulse rates a. Independent b. Dependent:

Chemistry
2 answers:
ivolga24 [154]2 years ago
5 0

Answer:

Explanation:

It can increase your heart rate so if that helps??

OverLord2011 [107]2 years ago
4 0

Answer:

A

Explanation:

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What is the percentage of nitrogen in ammonium chloride (NH4Cl)?
Katena32 [7]

Answer:

25%

Explanation:

Ammonium Chloride NH4CI Fertilizer-grade NH4Cl usually contains 25% N. About two-thirds of the world capacity for manufacture of this material is located in Japan, with the remaining one-third situated in India and China.

4 0
2 years ago
Concentration of 10.00 mL of HBr if it takes 5 mL of a 0.253 M LiOH solution to<br> neutralize it?
Sonbull [250]
In a titration, for an acid to neutralize a base, at the equivalence point, there should be an equal number of moles of H+ and OH-.

Moles of OH- can be found by multiplying the concentration of the base by the volume. (You will need to keep in mind the stoichimetric coefficients if the strong base is Ca(OH)₂, Ba(OH)₂, or Sr(OH)₂.

Moles of OH- = moles of H+
(0.253 M) * 0.005 L = 0.01000 L * c
c = 0.1265 M

The concentration of HBr is 0.127 M.
3 0
3 years ago
Which substance is most likely a lipid? -long chains of molecules composed of carbon, hydrogen, and oxygen atoms -compounds that
gulaghasi [49]

Answer:

The answer is

Explanation:

- A nonpolar organic compound that is insoluble in water

3 0
3 years ago
Which of the following happens during a lunar eclipse?
Svetlanka [38]

Answer:

a. Earth casts a shadow on the moon.    

Explanation:

Lunar eclipse occurs when Earth comes in between sun and moon. The sunlight falling on moon is blocked by Earth and the shadow of earth falls on moon. This happens on full moon day when sun, earth and moon align in one line.The moon passes through the shadow of earth and appears dark.

Thus, the correct option is a.

5 0
3 years ago
What are magic number​
atroni [7]

Something that is invisible that you can not see.

7 0
3 years ago
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