How is the relative abundance calculated?

What is the mass of 0.250 moles of tungsten

Hydrogen gas, iodine vapor, hydrogen iodine are mixed in a flask and heated to 674°C. H2 (g) + I2 (g) ⇋ 2 HI (g) Kc = 49 at 674°C If the initial concentrations of hydrogen gas and iodine vapor are both 0.

Is my answer right? Which of the following is a reasonable ground-state electron configuration? 1s22s22p43s2 1s21p62s22p6 1s22s22p63s23p64s24d10 1s22s22p63s23p64s23d5< - - - my answer, is this right?

A student places three ice cubes in a beaker and allows them to partially melt. if she measures the temperature of the water in the beaker, what will she most likely observe? explain your answer.

How many lone pairs does CO2 have? Does it have Single bonds or Double bonds? Does it obey the octet rule?

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda