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VARVARA [1.3K]
4 years ago
7

The testable question in a science investigation reads: “How does the size of a motor affect the speed of the vehicle?” What is

the independent variable in the question?
A) the sizes of motors


B) the brands of motors


C) the varying speeds


D) the types of vehicles
Chemistry
1 answer:
deff fn [24]4 years ago
3 0

The independent variable for this question would be A) the sizes of motors.

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Please help thaank youu
krek1111 [17]
First, let's start off by finding the mass of this whole hydrate.
(Note: the unit of measurement for mass will be amu)

Let's find the molecular mass of each element.
Co=58.933
Cl=35.45
H=1.008
O=15.999

Now, let's find the mass of each compound.

CoCl_2=58.933+2(35.45)=129.833
H_2O=2(1.008)+15.999=18.015

We have 6 molecules of H2O, so multiply 18.015 by 6 then add that with the weight of CoCl2.

6(18.015)=108.09
129.833+108.09=237.923

Now divide 108.09 (mass of all the H2O in the hydrate) by 237.923 (total mass of hydrate).

\dfrac{108.09}{237.923}

\approx0.45431

Turn that into a percentage and you get 45.431%.
Hope this helps! :)
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What is the mass % of carbon in dimethylsulfoxide?
ziro4ka [17]

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what is the consequence on your brain for snorting or taking amphetamines(meth/stimulant) as a 16 year old(minor)?
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What is 0.00550 g converted to mg
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Answer: it is 5.5 mg

Explanation:

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How do you convert kilograms to pounds?
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