Answer:
in short weight
Explanation:
weight is mass x gravitational pull on an object
Answer:
There are different explanations but the main one is the number of electrons the element has.
Explanation:
The elements are also divided into nonmetals, metals, and metalloids. There are general areas for example, most metals are in the middle and left side of the periodic table, nonmetals are typically on the right, and metalloids are inbetween them.
Answer:
18 g of gaseous water
Explanation:
We are given the equation;
2H2O (g) ----> 2H2 (g) + O2 (g) ∆H = 483.6 kJ
We are required to determine the mass of gaseous water decomposed when the amount of heat absorbed is 241.8 kJ.
From the equation;
2 moles of water are decomposed when 483.6 kJ is absorbed
Therefore;
241.8 kJ will be absorbed to decompose;
= (2 × 241.8 kJ) ÷ 483.6 kJ
= 1 mole
But; molar mass of water is 18 g /mol
Therefore;
Mass of gaseous water decomposed is 18 g
<span>(8.5 x 10^-3 mol) / (0.0320 mol/L KCN)=0.265625 L=265.625 ml.
This is the volume of a 0.0320 M KCN solution that would give a median lethal dose to a 185 lb person.</span>