Round 51.32975248 to the requested number of significant figure a. 2 significant figures 5 c. 6 significant figures b. S significant figures d. 7 significant figures

Given a 800 mg sample of thorium-231 decomposes via beta emission with a half life of 25.5 hours, how long would it take, in days, for the sample to decay down to 25 mg? 231 0 231 th - > beta pa 90 - 1 91 800 mg / 25 mg

What is the name for molecule that is made of two sugar monomers bonded together

Is CuS an ionic, non polar or polar covalent bond and why

What are two sources of the heat and pressure that cause metamorphism?

A buffer is prepared by adding 100 mL of 0.50 M sodium hydroxide to 100 mL of 0.75 M propanoic acid. Is this a buffer solution, and if so, what is its pH?

What device changes mechanical energy into electrical energy? Question 4 options: transformer generator copper wire light switch

Reaction rates are affected by how often the particles collide true false

A 25 N and 5 N force pull to the right. Friction is 10 N. If the object is 5 kg, find the net force and acceleration.

What properties of matter are intensive independent of their size

What is the density of an object having a mass of 8.0g and a volume of 25cm3