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4 years ago

Consider the free-body diagram. If you want the box to move, the force applied while dragging must be greater than the

Chemistry

2 answers:

Alex17521 [72]4 years ago

6 0

The answer is C. Friction Force

jolli1 [7]4 years ago

4 0

the anwser tot his question is c

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Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coeffici

goblinko [34]

The balanced equation for

Ca(OH)2 + H3PO4→ Ca3(PO4)2 + H2O is

3 Ca(OH)2 +2 H3PO4→ Ca3(Po4)2 + 6 H2O

3 moles of Ca(OH)2 reacted with 2 moles of H3PO4 to form 1 mole of Ca3(PO4)2 and 6 moles of H2O

6 0

3 years ago

Read 2 more answers

What is the order of increasing rate of eusion for the following gases, Ar, CO2, H2, N2?

AVprozaik [17]

Answer:

H2 > N2 > Ar > CO2

Explanation:

Graham's law explains why some gases efuse faster than others. This is due to the difference i their molar mass. Generally; The rate of effusion of gaseous substances is inversely proportional to the square rot of its molar mass.

This means gases with low molar masses would have higher efusion rate compared to gases with higher molar masses.

So now we just need to compare the molar masses of the various gases;

Ar - 39.95

CO2 - 44.01

H2 - 2

N2 - 28.01

To obtain the order in increasing rate, we have to order the gases in decreasing molar mass. This order of increasing rate is given as;

H2 > N2 > Ar > CO2

8 0

3 years ago

2 Ag20 →4 Ag + O2 what reaction is this

Schach [20]

Answer:

Decomposition

Explanation:

hope it helps you

6 0

3 years ago

Which feature causes a gap in the geologic record?

Serhud [2]

Answer:

Hi, there the answer is

A)extrusion

Explanation:

5 0

3 years ago

an aqueous solution contains 1.2mM of total ions. if the solution is NaCl (aq), what is the concentration of chloride ions?

Genrish500 [490]

Explanation:

As the total concentration is given as 1.2 mM. And, it is also given that salt present in the solution is NaCl.

As sodium chloride is an ionic compound so, when it is added to water then it will dissociate into sodium and chlorine ions as follows.

$NaCl \rightarrow Na^{+} + Cl^{-}$

So, it means in total there will be formation of 2 ions when one molecules of NaCl dissociates.

Therefore, concentration of chlorine ions will be calculated as follows.

Concentration of $Cl^{-}$ ions = $\frac{1.2mM}{2}$

= 0.6 mM

Thus, we can conclude that the concentration of chloride ions is 0.6 mM.

5 0

3 years ago