3 years ago

02. Two great pe birds are morati Both birth have a ne

Chemistry

2 answers:

mote1985 [20]3 years ago

7 0

It should be 2.50 but Ik my answer kinda wrong but that how my teacher told me

DENIUS [597]3 years ago

5 0

Answer:

I don't understand the question.

Explanation:

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Help me please.... and Thankyou

stealth61 [152]

The answer is B. because it starts at Conifer Seeds and ends at Northern goshawks.

6 0

3 years ago

To interconvert the concentration units molality (m) and mass percent, you must also know the density of the solution. A) True B

uranmaximum [27]

Answer:

The correct answer is option false.

Explanation:

Molality of the solution defined as moles of substance present in 1 kilogram of solvent.

Moles = $\frac{Mass of solute}}{\text{molar mass of solute}}$

$Molality=\frac{Moles}{\text{Mass of solvent(kg)}}$

Mass of percent (w/w%) of the solution is defined as amount of solute present in 100 grams of solution.

$(w/w\%)_=\frac{\text{Mass of solute}}{\text{Mass of solution}}\times 100$

So, if want to inter-convert molality into mass percent we can do that without knowing density of solution.

Mass of solution = Mass of solute + Mass of solvent

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3 years ago

Will the volume of a gas increase, decrease, or remain unchanged for each of the following sets of changes?

Katena32 [7]

The answer would be 150 half of 200 and 100 is 150

7 0

1 year ago

Mention the oxidation state of chromium in potassium dichromate and chromium sulphate

dedylja [7]

Answer:

Let, X be the oxidation state of Cr in K

2(+1)+2X+7(−2)=0

2+2X−14=0

2X=12

X=+6

Hence, the oxidation state of Cr in K

is +6.

8 0

3 years ago

What is the definition of specific heat ?

Serggg [28]

Answer:

the heat required to raise the temperature of the unit mass of a given substance by a given amount

Explanation:

6 0

3 years ago