Answer:
Moles of gas collected = 0.952 mole
Explanation:
To calculate the number of moles of the gas collected, we use the equation given by ideal gas which follows:
where,
P = pressure of the gas = 702 mmHg
V = Volume of the gas = 25.0 L
T = Temperature of the gas = ![22.5^oC=[22.5+273.15]K=295.65\ K](https://tex.z-dn.net/?f=22.5%5EoC%3D%5B22.5%2B273.15%5DK%3D295.65%5C%20K)
R = Gas constant = 
n = number of moles of gas = ?
Putting values in above equation, we get:
<u>Moles of gas collected = 0.952 mole</u>
<span>88 and 84 are mass numbers
the mass number of an element is the sum of the number of protons and the number of neutrons (in which they are each equal to 1 unit (amu))
the number of protons is always the same for a given element (e.g. any C atom has 6 protons), but the number of neutrons varies. Two atoms of the same element (number of protons) with a different number of neutrons are called "isotopes".
So the two strontium atoms differ by 4 neutrons. 84Sr has four neutrons less than 88Sr</span>
A rock is obviously more dense than a crumpled piece of paper of the same size. A styrofoam cup is less dense than a ceramic cup.
hope this helps if it do mark me as brainlest thank you !!
Ummmmmmmm...... Idk sorry
2.03 molecules times 6.022E23 = 1.22E24
