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kondaur [170]
3 years ago
9

PLEASE ANSWER FAST!!!!! Consider this hypothesis statement. "If the number of hours a student studies increases, then the studen

ts test grade will increase." What is the independent variable in the above statement?
Chemistry
1 answer:
yanalaym [24]3 years ago
7 0

Answer:

i believe the answer is number of hours because independent variable is what the experimenter changes or controls

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KOH + H3 PO4+K3 PO4+H2O​
lara [203]

Answer:

Explanation:

The balanced reaction would be:

H3PO4+3KOH==>K3PO4+3H2O

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3 years ago
How does littering affect air pollution?
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When you litter,
the trash can go into the ocean, and a fish could think of it as food, eat it, suffocate and die,
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3 years ago
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What are 4 other gases in the atmosphere besides oxegen and nitergin?
Levart [38]
Helium, neon,nitrogen and argon
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3 years ago
Which is an acceptable Lewis structure for a diatomic nitrogen molecule?
timofeeve [1]
Nitrogen has 5 valence electrons (ve-), so a diatomic nitrogen molecule will have twice as many, 10 valence electrons. Then, just draw electrons in pairs of 2 until you both get ride of all of them (reach 0) and you fill every atom (eight electrons each). It can be drawn either way, the important thing is that there are 3 electron pairs shared between the two atoms.

6 0
4 years ago
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How many grams of NaCl are required to make 150.0 mL of a 5.000 m solution
Oksi-84 [34.3K]

The  grams   of NaCl  that are required  to  make  150.0 ml of  a  5.000 M  solution is  43.875 g


calculation

Step 1:calculate  the  number of moles

moles =  molarity  x volume  in L

volume  = 150 ml / 1000 = 0.15 L

= 0.15 L  x 5.000  M  = 0.75  moles

Step 2:  calculate mass

mass =  moles x  molar mass

molar mass  of NaCl = 23 + 35.5 = 58.5 mol /L


mass is therefore =0.75  moles  x 58.5  mol /l =43.875 g

4 0
3 years ago
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