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3 years ago

Which substance will most likely dissociate when it is dissolved in water?

Chemistry

2 answers:

Katyanochek1 [597]3 years ago

6 0

Answer: CaC12

Explanation: Calcium chloride not 100% sure tho

kykrilka [37]3 years ago

4 0

Answer:

the answer is C

Explanation:

i got it right on edge

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What is the molarity of a solution prepared by dissolving 54.3 g of Calcium nitrate

Ostrovityanka [42]

Answer: 40 + 2x14 + 6x16 = 164g/mole

54.3g x [1mole / 164g] = 0.331moles

355mL x 1L / 1000mL = 0.355L

molarity = 0.331moles / 0.355L =

Explanation:

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3 years ago

Please help!

cluponka [151]

IT IS D FOCAL POINT
P.S. im in middle school not trying to brag

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3 years ago

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Name two ways in which carbon dioxide is added to the troposphere.

Vedmedyk [2.9K]

Answer:

Carbon dioxide is added to the atmosphere through cellular respiration and the combustion of fossil fuels

Explanation:

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4 years ago

I need help with number 2

Mademuasel [1]

Answer:

The water in the leaf will evaporate

Explanation:

the leaf would absorb the water and when sat in the sun, the water would evaporate and the leaf would dry out

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3 years ago

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A glucose solution is administered intravenously into the bloodstream at a constant rate r. As the glucose is added, it is conve

Helen [10]

Answer:

$C(t)=\frac{r}{k}-(\frac{r-kC_o}{k})e^{-kt}$

Explanation:

The differential equation is given as:

$\frac{dC}{dt} = r- kC$

$\frac{dC}{r- kC} = dt$

Taking integral of both sides; we have:

$\int\limits \frac{dC}{r- kC} = \int\limits dt$

$-\frac{1}{k} In(r-kC) = t+D\\In(r-kC)=-kt-kD$

$r-kC=e^{-kt-kD}$

$r-kC=e^{-kt}e^{-kD}$

$r-kC=Ae^{-kt}$

$kC=r-Ae^{-kt}$

$C=\frac{r}{k}-\frac{A}{k}e^{-kt}$

$C(t)=\frac{r}{k}-\frac{A}{k}e^{-kt}$ ------- equation (1)

If C(0)= $C_o$ ; we have:

C(0)= $\frac{r}{k}-\frac{A}{k}e^0$ (where; A is an integration constant)

$C_o = \frac{r}{k}- \frac{A}{k}$

$C_o=\frac{r-A}{k}$

$kC_o=r-A$

$A=r-kC_o$

Substituting $A=r-kC_o$ into equation (1); we have;

$C(t)=\frac{r}{k}-(\frac{r-kC_o}{k})e^{-kt}$

3 0

4 years ago