Answer: The molar mass of a single hydrogen atom is 1 g/mol.
Explanation: The molar mass of a hydrogen molecule is 2 x 1 g/mol = 2 g/mol. Likewise, a molecule of oxygen gas has the formula O2 .
sodium chloride
and lead (II) acetate
potassium sulfate and strontium iodide
chromium (III) nitrate and sodium phosphate
1.
2NaCl + Pb(CH3COO)2 → 2NaCH3COO + PbCl2
2.
K2SO4 + SrI2 → KI + SrSO4
3.
Cr(NO3)3 + Na3PO4 →CrPO4 + NaNO3
Answer : Option C) Non metal.
Explanation : A non metal is the one which does has poor thermal conductivity, poor electrical conductivity, are usually brittle solids which are not malleable or ductile, they have little or no metallic luster at all, and they gain electrons easily.
These are the properties which are seen in a non metal.
The actual formula for volume for a cube is the length multiplied by the width and then multiplied by the height. Since all three measurements are the same, the formula results in the measurement of one side cubed. For the example, 5^3 is 125 cm^3. Multiply the volume by the known density, which is the mass per volume.
Answer:
Final volume is 3.50L
Explanation:
It is possible to find volume of a gas using combined gas law:
<em>Where P is pressure, V is volume and T is temperature of 1: initial state and 2: final state</em>
If initial state of the gas is:
1.75L of a gas is at 700K and is under 250kPa of pressure
And final state is:
298K and 53.2kPa.
Replacing:
0.625L = 0.1785*V₂
<em>3.50L = V₂</em>
Thus, <em>final volume is 3.50L</em>
