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1 year ago

A racing car travels 340 miles in 120 minutes. what speed is traveling at?

Chemistry

1 answer:

Papessa [141]1 year ago

4 0

Answer:

It is traveling at 170 miles per hour.

Explanation:

divide 340 by 2 because right now it's at 340 miles per two hours.

You get 170 miles per hour.

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HELP ASAP, PLEASE!

algol13

A) James Cook.
B) He put his sailors on a strict diet to see if they would get scurvy.
C) Sauerkraut.
D) He told others of this diet and that none of his sailors died of scurvy.
E) Chemicals can be found almost anywhere and almost anyone can be a scientist.

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2 years ago

A 2.550 x 10^−2 M solution of glycerol (C3H8O3) in water is at 20.0°C. The sample was created by dissolving a sample of C3H8O3 i

BARSIC [14]

Answer:

$2.557\times 10^{-2}\ molal.$

Explanation:

Given , molarity of glycerol= $2.55\times 10^-^2\ M.$

Volume= 1 L.

Therefore, No of moles of glycerol= $molarity\times volume\ in\ liters=2.55\times 10^-^2\ moles.$

Now, volume of water needed, V=998.8 mL.

Density is given as= 0.9982 g/mL.

Therefore, mass of water = $volume\times density=998.8\times 0.9982=997\ g=0.997\ kg$

Now, molality= $\dfrac{no\ of\ moles}{mass\ of\ solvent\ in\ kg}=\dfrac{2.55\times 10^-^2\ }{0.997}=0.02557\ molal=2.557\times 10^{-2}\ molal.$

Hence, this is the required solution.

3 0

1 year ago

What is the mass, in grams, of 0.450 moles of Sb?

murzikaleks [220]

Answer:

54.9 g

Explanation:

0.450 mol x 122g/mol

7 0

2 years ago

Read 2 more answers

Consider the formation of nitryl fluoride: 2NO2(g)+F2(g)⇌2NO2F(g) The reaction is first order in F2 and second order overall. Wh

Dahasolnce [82]

Answer:

Rate = $k[NO_{2}][F_{2}]$

Explanation:

Two reactants are present in this reaction which are $NO_{2}and F_{2}$
We know overall order of a reaction is summation of individual order with respect to reactants present in rate law equation.
Here, overall order of reaction is 2 including first order with respect to $F_{2}$
So, rate of reaction should also be first order with respect to another reactant i.e. first order with respect to $NO_{2}$
So, rate law: rate = $k[NO_{2}][F_{2}]$

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2 years ago

Which factor explains why coal dust in an enclosed space is more explosive than coal dust blown outdoors into an open space ? A.

ZanzabumX [31]

The correct option is B.

Coal dust refers to the powered form of coal. Because of the high surface area of coal dust it is highly prone to dust explosion, which involves rapid combustion of fine particles that are suspended in the air; this usually occur in an enclosed place. Coal dust in an enclosed place is more explosive than coal dust that is blown outdoor in an open space because the coal dust in an enclosed place is more concentrated due to restricted space, thus it is more liable to explosion.

8 0

2 years ago

Read 2 more answers