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3 years ago

Which compounds are an alkanes, CnH2n+2? pls reply fast!

Chemistry

1 answer:

Olegator [25]3 years ago

7 0

Answer:

Methane

Explanation:

Alkanes have the molecular formula of "CnH2n+2" which means for every carbon molecule there are two hydrogens plus two more. For example when there is one Carbon there are four hydrogens, this molecule is known as "Methane"

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The sodium chloride molecule breaks apart in water. what does a represent

yarga [219]

What represent ???( the molecules get dissolved in water)..

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4 years ago

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;

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

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4 years ago

Which of the following represents a chemical change. A water to boiled

horsena [70]

Hello,

Here is your answer:

The proper answer to this question is option D "wood is burned". Its a chemical change because its changing forms wood to ash.

Your answer is D.

If you need anymore help feel free to ask me!

Hope this helps!

7 0

3 years ago

Read 2 more answers

The approach most commonly used to measure metabolic rate is to measure the rate of O2 consumption. Although there are small err

In-s [12.5K]

Explanation:

Metabollic rate is the amount of energy expended from an organism at a given point in time.

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C6H12O6(s) + 6O2(g) --> 6H2O(l) + 6CO2(g)

The amount of energy produced for the types of food is roughly proportional to the amount of oxygen use, so that the metabolic rate can be measured by measuring the rate of oxygen consumption.

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3 years ago

Which of the following would be used to measure the amount of matter in an object?

erik [133]

The answer is Weight

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4 years ago

Which compounds are an alkanes, CnH2n+2? pls reply fast!​

Which compounds are an alkanes, CnH2n+2? pls reply fast!