The nitrogenous bases cytosine and thymine are

a. purines.

b. a phosphate group.

c. a sugar group.

d. pyrimidines.

What determines whether matter is a solid, liquid, or gas?

What is the charge of CO3?

According to modern atomic theory, it is nearly impossible to determine an electron's exact?

O que é umidade absoluta?

The age of fossils can sometimes be determined by radiometric dating, which is based on the constant rate of decay of radioactive isotopes. the time required for half of a radioactive isotope to decay is called the half-life of that isotope.

Part a ammonia can be produced via the chemical reaction n2 (g) + 3h2 (g) ⇌2nh3 (g) during the production process, the production engineer determines the reaction quotient to be q = 3.56*10-4. if k = 6.

In what respect does an atom of magnesium differ from a magnesium ion (Mg^{2+}) ? (A) The ion has a more stable electronic arrangement than the atom.

What is the approximate percent change in protein for soybeans

2 reason why noble gases become less ideal in their behaviour down the group

A cross-country skier can complete a 7.5 km race in 45 min. What is the skier's average speed? km/h