2 years ago

How did thinking about collision theory help you think about the effect of social distancing?

1 answer:

3 0

Answer:

When two people "collide" and one of them is carrying the virus then the other person starts carrying it. This is why we need to social distance so it doesn't spread.

Explanation:

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weqwewe [10]

Answer:

8.21 × $10^{15}$ Hz

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2 years ago

Which of these choices is a physical property that does not change when the size of the sample changes? mass,volume,density,comb

Shalnov [3]

Answer:

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2 years ago

How many hydrogen atoms are in 89.5 g of<br> C6H6 ?<br> Answer in units of atoms.

Elodia [21]

Solution :

Molar mass of $C_6H_6$ is :

M = 6×12 + 6×1 g

M = 78 g

78 gram of $C_6H_6$ contains $6.022 \times 10^{23}$ molecules.

So, 89.5 gram of $C_6H_6$ contains :

$n = 6.022 \times 10^{23} \times \dfrac{89.5}{78}\\\\n = 6.91 \times 10^{23}$

Now, from the formula we can see that one molecule of $C_6H_6$ contains 2 hydrogen atom . So, number of hydrogen atom are :

$h = 2\times 6.91 \times 10^{23}\\\\h = 1.38 \times 10^{22}\ atoms$

Hence, this is the required solution.

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2 years ago

HELP I DONT KNOW HOW TO DO THIS !!

BlackZzzverrR [31]

Answer:

you divide 71.5 by 2

Explanation:

it's may look intimidating but the question is actually really simple.

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2 years ago

For which of the following processes would you expect there to be an increase entropy

adoni [48]

CaBr2(s) Ca+2(aq)+2Br-(aq) which means, <span>Solid is turning into free ions so entropy is increasing .</span>

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2 years ago