1. With a half-life of 29 years, how long will it take for 600g of strontium-90 to decay to 200g?

A neutron walks into a gas station to buy some snacks. He asks the cashier,"How much?" The cashier replies, "For you? No charge." what does this mean?

Organisms can reproduce asexually or sexually. All BUT ONE of the steps below is involved in sexual reproduction. Which step describes asexual rather than sexual reproduction? The sperm fertilizes the egg to produce a zygote.

You heat a piece of iron from 200 to 400 K What happens to the atom's energy of random motion

Which of the following statements about anabolic pathways is true? - They release energy by degrading polymers to monomers. They consume energy to build up polymers from monomers. They are usually spontaneous chemical reactions.

What term best describes the relationship between the pronator quadratus and supinator?

Which of the following elements is the most stable element? argon, manganese, phosphorus, robidium

List results of Chemical Reactions.

When you measure something in meters cubed, you are measuring

Low density: low pressure: high density Is which. evaporation? water vapor? condensation / liquid water

Which structures are found on sponges? pores medusae polyps stinging cells