I have a feeling that #2 is the one.
Avagadros constant states that there are 6.022 x 10²³ units in 1 mol of substance.
These units could be atoms that make up an element, or molecules making up a compound or ions as well.
1 mol of O₂ contains - 6.022 x 10²³ molecules of O₂
molecular mass of O₂ is (16*2) = 32 g/mol
1 mol of O₂ weighs = 32 g
Therefore in 32 g of O₂ - 6.022 x 10²³ O₂ molecules
gas tank contains O₂ weighing 650 g
in 1 g - 6.022 x 10²³/32 molecules
in 650 g - 6.022 x 10²³/32 * 650
= 2.96 x 10²² molecules of O₂
Answer:
353kg
Explanation:
2000 x 0.1765 = 353kg
for every 1 cubic metre of helium there is 0.1765 kg of it
the balloon is holding 2,000 cubic metres of the helium.
That means that there are 2000 times of 0.1765kg of helium in the balloon
so you times 0.1765kg by 2000
Answer:
Earth takes in thermal energy from the Sun in a process called. ... Sunlight strikes Earth's surface at different angles. This angle is called the angle of. ⇒ insolation.
Explanation:
Report the guy that spammed, he spams for points and doesn't even try to help.
Answer:
Well its B im sorry if im wrong.
Explanation: