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3 years ago

15

A sample of CO₂ solid and a sample of CO₂ gas differ in their

1 answer:

Mrac [35]3 years ago

3 0

Answer:

CO2 soild is "Dry Ice".

Explanation:

if the pressure of liquid CO2 is suddenly released is proportion of the liquid will change to the soild state( become dry ice ) and the remainder will revert in gas..

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True or false: If you rub things together, electrons can move from one atom to another?

Sedbober [7]

Answer:

true

Explanation:

there is a transfer of electrons from one material to the other material. This causes one object to become positively charged (the electron loser) and the other object to become negatively charged (the electron gainer).

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3 years ago

Read 2 more answers

I NEED HELP ASAP PLZ LOOK AT THE PICTURE CAREFULLY!!!!

Virty [35]

Answer:

it is a little fuzzy

Explanation:

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3 years ago

What is the highest energy to which doubly ionized helium atoms (alpha particles) can be accelerated in a DC accelerator with 3

pentagon [3]

Answer:

Highest energy will be equal to $9.6\times 10^{-13}J$

Explanation:

Charged on doubly ionized helium atom $q=2e=2\times 1.6\times 10^{-19}C=3.2\times 10^{-19}C$

It is accelerated with maximum voltage of 3 MV

So voltage $V=3\times 10^6volt$

Now energy is given by $E=qV=3.2\times 10^{-19}\times 3\times 10^6=9.6\times 10^{-13}J$

So highest energy will be equal to $9.6\times 10^{-13}J$

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3 years ago

There are 8.6 x 1025 atoms in a block of Tin (Sn). How many moles is the block of Tin?

zysi [14]

Answer:

142.8096978mol

Explanation:

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2 years ago

Given that 25.0 mL of mercury has a mass of 340.0 g, calculate (a) the density of mercury and (b) the mass of 120.0 mL of mercur

natita [175]

Answer :

(a) The density of mercury is, 13.6 g/ml

(b) The mass of 120.0 ml of mercury is, 1632 grams

Explanation :

(a) Now we have to calculate the density of mercury.

<u>Given :</u>

Volume of mercury = 25.0 ml

Mass of mercury = 340.0 g

Formula used :

$\text{Density of mercury}=\frac{\text{Mass of mercury}}{\text{Volume of mercury}}$

$\text{Density of mercury}=\frac{340.0g}{25.0ml}=13.6g/ml$

Therefore, the density of mercury is, 13.6 g/ml

(b) Now we have to calculate the mass of 120.0 ml of mercury.

As, 25.0 ml of mercury has mass = 340.0 g

So, 120.0 ml of mercury has mass = $\frac{120.0ml}{25.0ml}\times 340.0g=1632g$

Therefore, the mass of 120.0 ml of mercury is, 1632 grams

3 0

3 years ago