3 years ago

Need help with this question

Chemistry

1 answer:

hichkok12 [17]3 years ago

4 0

What question? Lhh this is hilarious.

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A parachute on a racing dragster opens and changes the speed of the car from 85 m/s to 45 m/s in a period of 4.5 seconds. What i

LiRa [457]

Answer:

- 8.89 $m/s^{2}$

Explanation:

$\frac{(Vf-Vo)}{time}$ = $\frac{(45-85 m/s)}{4.5s}$ = - 8.89 $m/s^{2}$

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3 years ago

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I need help on #2 a and b. please explain steps and answer

Vaselesa [24]

I think A. o2 is oxygen, h202 is a clear liquid like bleach, And H20 is water lol :P

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3 years ago

How are prefixes used to name compounds

Dennis_Churaev [7]

However, simple covalent compounds are generally named by using prefixes to indicate how many atoms of each element are shown in the formula. Also, the ending of the last (most negative) element is changed to -ide. The prefixes used are mono-, di-, tri-, tetra-, penta-, hexa-, and so forth.

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Pls help me out!! lol

ella [17]

Answer:

i honestly dont know

Explanation:

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3 years ago

Identify the precipitate (if any) that forms when Na2S and CdSO4 are mixed.

andrezito [222]

Answer : Cadmium sulfide (CdS) precipitate is formed.

Explanation :

When the sodium sulfide, $(Na_2S)$ is mixed with cadmium sulfate, $(CdSO_4)$ then cadmium sulfide precipitate and sodium sulfate, $(Na_2SO_4)$ is formed. The cadmium sulfide is insoluble in hot and cold water but sodium sulfate is soluble in water.

The balanced chemical reaction will be,

$Na_2S+CdSO_4\rightarrow Na_2SO_4+CdS$

This reaction is an example of double displacement reaction in which the cation and anion of the two reactants exchange their places to give two new products.

This is a chemical reaction where the two clear solutions mixed to produce a bright yellow colored precipitate of cadmium sulfide.

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