Can someone answer these plss :-))) 1. You have sample of 269.16 grams of water which contains 29.91 g of Hydrogen and 239.25 g of Oxygen.

Calculate the % Composition of H and O.

What is the mass ratio of this sample of water?

2. A sample of 150.00 grams of NaCl is composed of 60.00 g of Na and 90.00 g of Cl

Calculate the % Composition of Na and Cl

Calculate the mass ratio of your sample

What does x represent in the formula for the compound xcl4?

Which of the following units is not an official si unit

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.