Which of the following is true for an atom which has 29 protons, 34 neutrons and 29 electrons?

Atomic number Mass number

A. 29 34

B. 29 63

C. 34 63

D 34 29

What is phytoplankton

If a sample of oxygen gas originally at from 171.4 K has its temperature increased to 288.4 K and the new volume was 1.6 L, what was the original volume of the sample of oxygen gas?

Which structure is found in a plant cell but not in a animal cell is it a. chloroplast b. cell membrane or c. ribosome

What is the easiest / cheapest hydroponics system that a student can make from almost everyday items

If one light bulb burns out what happens

A precipitate of zinc hydroxide can be formed using the reaction below. ZnCl2 (aq) + 2 KOH (aq) → Zn (OH) 2 (s) + 2 KCl (aq) If excess KOH is used, the zinc hydroxide will form zincate ions and dissolve in the solution according to the chemical

Which of the following is the correct (unbalanced) equation for the reaction that takes place when solid phosphorus combines with oxygen gas to form diphosphorus pentoxide? A. P (s) + O2 (g) - -> P2O5 (s) B. P2O5 (s) - -> P2 (s) + O2 (g) C.

Nonrenewable resources are natural resources that are limited in supply and cannot be replaced as quickly as they are used up. True or false

Which method for treating arthritis is an example of pseudoscience? diet drugs exercise magnets

Only a small portion of the organisms that lived in the geologic past have been preserved as fossils. Which condition best increases the chance that an organism will become fossilized?