The half-life of carbon-14 is 5730 years. a sample is found to have one-eighth the original amount of carbon-14 in it. how old is the sample?

How would non secretion of of saliva effect digestion of food in the mouth.

Consider the resonance structures of formate. the first lewis structure of formate has a central carbon atom. a hydrogen atom and two osygen atoms are bonded to the carbon atom. the bond between carbon and hydrogen is a single bond.

Abrasion is a form of chemical weathering. true false

Question 2. Which of the following is a compound? a) Stainless steel b) Bronze c) Graphite d) Hydrogen sulphide

Losing weight with Thyroid issues

What was the result of the atomic theory?

Explain mitosis and meiosis in your own words.

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.