A sample of hydrogen is collected in a flask

over water. The partial pressures are 736 torr for

H, and 22 tort for H2O. What total pressure is

exerted by the mixture of gases?

Janet wanted to see how much cooler the temperature was at night compared to during the day. What to should she use?

A person measures the mass of an 8 cm3 block of brown sugar to be 12.9 g. What is the density of the brown sugar.

Element X consists of two isotopes with masses of 62.9 and 64.9. The relative atomic mass of the element is 63.6. The percentage abundance of the lighter isotope is closest to - Select one: -65% -55% -35% -45%

Consider this reaction: H3BO3 (aq) + HS - (aq) H2BO3 - (aq) + H2S (aq) What is the sequence of Brønsted-Lowry acids and bases? A. base + acid acid + base B. acid + base acid + base C. acid + base base + acid D. base + acid base + acid

Oxidation is the gain of electrons. Oxidation is the gain of electrons.

If you were given 10.0 mL of 2.0 M H3X, how many milliliters of 2.0 M NaOH would it take to completely neutralize the acid?

What are some solid mixtures in a classroom

What is the electron configuration of aluminum?

What is the volume of an object with a height of 2.3cm, a width of 2.4cm, a mass of 17.5g, and a length of 20cm?

Is layers of sediment forming at the bottom of the ocean erosion?