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aleksandr82 [10.1K]

2 years ago

9

Consider two gases, A and B, are in a container at room temperature.

2 answers:

prisoha [69]2 years ago

6 0

The answer is B. increase
because when the pressure is doubled means the molecules are more close to each other so the reaction will be increase :)))
i hope this is helpful
have a nice day

suter [353]2 years ago

4 0

The rate of reaction would increase because as pressure increases the molecules are more likely to bump into each other leading to a more likely hood of the molecules colliding properly to react leading to an increase in the reaction rate of the substance.

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A 50.00 mL sample of groundwater is titrated with 0.0800 M EDTA . If 10.90 mL of EDTA is required to titrate the 50.00 mL sample

vitfil [10]

Answer:

0.01744 M is the hardness of the groundwater.

1,744 ppm is the hardness of the groundwater in parts per million of calcium carbonate by mass.

Explanation:

$Ca(In)^{2+}(red)+EDTA\rightarrow Ca(EDTA)^{2+}+In(blue)$

In = Indicator

Concentration of calcium ion in groud water = $C_1=?$

Volume of ground water = $V_1=50.00 mL$

Concentration of EDTA solution = $C_2=0.0800 M$

Volume of EDTA solution = $V_2=10.90 mL$

$C_1V_1=C_2V_2$

$C_1=\frac{C_2V_2}{V_1}=\frac{0.0800 M\times 10.90 mL}{50.00 mL}=0.01744 M$

$CaCO_3(sq)\rightarrow Ca^{2+}(aq)+CO_3^{2-}(aq)$

$[CaCO_3]=[Ca^{2+}]$

So. $[CaCO_3]=0.01744 M$

0.01744 M is the hardness of the groundwater.

0.01744 Moles of calcium carbonate are present in 1 Liter of solution.

Mass of 0.01744 moles of calcium carbonate =

$0.01744 mol\times 100=1.744 g$

1 g = 1000 g

1.744 g = 1.744 × 1000 mg = 1,744 mg

$ppm=\frac{\text{Mass of solute) mg)}}{\text{Volume of solution}{L}}$

The hardness of the groundwater in parts per million :

$\frac{1,744 mg}{1 L}= 1,744$

1,744 ppm is the hardness of the groundwater in parts per million of calcium carbonate by mass.

4 0

3 years ago

A hydrobromic acid (HBr) solution has a molar concentration of 0.055 M, Calculate the and pH of the solution. (Remember that Kw=

seraphim [82]

Answer: Im not sure but i think its B

Explanation: Its hard to explain so im

not gonna do it

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3 years ago

Why are Noble gases inert?

sladkih [1.3K]

Correct answer is <span>C. They have a full shell of valence electrons. </span>

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3 years ago

Initially, scientists described atoms as the smallest particles of matter. However, smaller particles within atoms were discover

g100num [7]

Answer:

By designing new technology that would prove new information

Explanation:

3 0

3 years ago

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Who created the onion model in chemistry?

11111nata11111 [884]

Rick Maurer i think that’s how you spell his last name

8 0

2 years ago