Convert 4.03 x 10^22 atoms of Na to moles of Na

How much heat (in kj) is required to warm 13.0 g of ice, initially at - 12.0 ∘c, to steam at 113.0 ∘c? the heat capacity of ice is 2.09 j/g⋅∘c and that of steam is 2.01 j/g⋅∘ c.

Which of the following statements correctly describe (s) the driving forces for diffusion of Na + and K + ions through their respective channels?

Ca (OH) 2 + H2SO4 ⟶2H2O + CaSO4 What volume of 1.45 M Ca (OH) 2 is needed to react with 25.0 moles of H2SO4?

How would you write and name the ions for tin?

The balanced chemical equation, C (s) + O2 (g) CO2 (g), can be expressed in words as ... 1. Solid carbon plus oxygen gas yields cobalt dioxide 2. Carbon plus diatomic oxygen yields cobalt dioxide 3.

A 3.00 L flexible container holds a sample of hydrogen gas at 153 kPa. If the pressure increases to 203 kPa and the temperature remains constant, what will the volume be?

Measurement of the functions of a nephron reveals a glomerular capillary pressure of 69 mm Hg, and a pressure in the capsular space of 15 mm Hg.

Water is unique because the density of it's solid is less than the density of it's liquid. Describe how life would be different if this weren't true

If an element has 1 valence electrons, how many dots will be in the elements dot diagram?

What is the temperature of a gas at STP?