<img src="https://tex.z-dn.net/?f=%5Chuge%5Cmathfrak%5Cred%7BQuEsTioN%3A-%7D" id="TexFormula1" title="\huge\mathfrak\red{QuEsTio

All categories

3 years ago

N:-}" alt="\huge\mathfrak\red{QuEsTioN:-}" align="absmiddle" class="latex-formula">
How many neutrons are present in 4.4 gram of Co2

Chemistry

1 answer:

sladkih [1.3K]3 years ago

6 0

Explanation:

hope it will help you Mark me as a brilliant

You might be interested in

PWEASE REVIEW ME AND ME MATES TEEF

mixas84 [53]

So the first one is yellow and the other one is white

5 0

3 years ago

At what speed does all electromagnetic radiation travel?

Mkey [24]

3.0
10 to the power of 8

5 0

4 years ago

The British gold sovereign coin is an alloy of gold and copper having a total mass of 7.988 g, and is 22-karat gold.

azamat

Answer:

(a) $m_{gold}=7.322g$

(b)

$V_{gold}=0.379cm^3$

$V_{copper}=0.122cm^3$

Explanation:

Hello,

(a) In this case, with the given formula we easily compute the mass of gold contained in the sovereign as shown below:

$m_{gold}=\frac{m_{tota}*karats}{24}=\frac{7.988g*22}{24}=7.322g$

(b) Now, by knowing the density of gold and copper, 19.32 and 8.94 g/cm³ respectively, we compute each volume, by also knowing that the rest of the coin contains copper:

$V_{gold}=\frac{m_{gold}}{\rho_{gold}} =\frac{7.322g}{19.32g/cm^3}=0.379cm^3$

$m_{copper}=7.988g-7.322g=1.09g\\V_{copper}=\frac{m_{copper}}{\rho_{copper}}=\frac{1.09g}{8.94g/cm^3} \\\\V_{copper}=0.122cm^3$

$\rho _{coin}=\frac{m_{total}}{V_{gold}+V_{copper}}=\frac{7.988 g}{0.379cm^3+0.122cm^3}\\ \\\rho _{coin}=15.94g/cm^3$

Best regards.

3 0

4 years ago

Read 2 more answers

hich of the following statements is not true for an exothermic reaction? Question 2 options: The products have a higher heat con

yKpoI14uk [10]

Answer:

An exothermic process releases heat, causing the temperature of the immediate surroundings to rise. An endothermic process absorbs heat and cools the surroundings.

3 0

4 years ago

If you go into the lab and dissolve 2.11 g of magnesium chloride in enough water to make 1500 ml of solution, what is the molari

dusya [7]

Moles pf mgcl2= 2,11/M mgcl2=2,11/95= 0,0222

Molarity=0,0222/1,5=0,0148 M.

I hope this is correct.

4 0

3 years ago