Calculate the atomic mass of element X if there are two isotopes of this element (X-24 and X-28) and 75% of all X atoms are X-28 isotopes? 52 amu 26 amu 4 amu 27 amu

A belief judgement or way of thinking about something is called?

A mixture of 90.0 grams of CH4 and 10.0 grams of argon has a pressure of 250 torr under conditions of constant temperature and volume. The partial pressure of CH4 in tore is?

If uranium-235 is bombarded with a neutron, it will temporarily become uranium-236 lead-235 plutonium-236

A charge of 5.0 coulombs moves through a circuit in 0.50 second. What is the current in the circuit?

Which element is oxidized in the following reaction: CuO (s) + H2 (g) Cu (s) + H2O (l)

True or False: It is recommended to use sugar cubes to sweeten lemonade because they have a low surface area.

54,000,000 nanometers equals 0.000000054 megameters.

When cream mixes with coffee, is this a chemical or physical change?

A gas occupies 72.1 at stp. At what temperature would the gas occupy 85.9 L at a pressure of 93.6 kPa?

An 80 kg volleyball player lands from a jump and tries to stop her forward motion. The normal contact force exerted by the floor on her shoes is 2000 N. The friction force exerted by the floor on her shoes is 600 N acting backward on the player.