Answer:
the sum of the atoms or ions in the compound
Solution us here,
let the rate of diffusion of H2(r1) be x and⁷ the rate of diffusion of gas(r2) be x+x/6=7x/6.
Molar mass of H2 (M1)=2 g
Molar mass of gas(M2)= ?
Now, from the Ghram's law of diffusion of gas,

here, it looks like I have done wrong.
But all of the answers in option are wrong.
Because, rate of diffusion of any gas is inversely proportional to the square root of its malor mass.
And in the question, gas has higher rate of diffusion than hrdrogen. So it should have molar mass less than hydrogen.
Answer:
A.There are many active undersea volcanoes
B.There are long underwater mountain chains
Answer:
<h3>» a. Magnesium</h3>
Explanation:
<h3>• Magnesium is least reactive and </h3>
<h3>• Magnesium has atomic number 12. Its electronic configuration is 2,8,2 . Thus, it has </h3><h3>2 valence electrons.</h3>
Answer:
Chemical properties of acids are the following.
1) Acids have pH lower than neutral i. e. 0 to 6.
2) Acids have sour taste.
3) It changes the color of indicator from blue litmus to red.
4) When the acid react with base forming salt and water.
5) When acid react with metals it produces hydrogen gas.
6) Acid have the ability to corode metals.