How many grams of oxygen are needed to react completely with 200.0 g of ammonia, nh3? 4nh3 (g) + 5o2 (g) ®4no (g) + 6h2o (g)

a. 469.7 g

b. 300.6 g

c. 250.0 g

d. 3.406 g

e. 2.180 g?

What two hydrogen atoms bond with one oxygen atom to form water what happens to the electron

What is the coefficient? A. A whole number that appears in front of a compound or element in a balanced chemical equation. B. A whole number that appears as a subscript in front of a formula in a balanced chemical equation C.

All of the following are conditions that organisms in a tidepool must withstand except a. constant tidal changes b. temperature changes c. constant salinity d. changing salinity

Which list contains three major greenhouse gasesfound in earth's atmosphere? (1) carbon dioxide, methane, and water vapor (2) carbon dioxide, oxygen, and nitrogen (3) hydrogen, oxygen, and methane (4) hydrogen, water vapor, and nitrogen

Which of these is not true of Bohr's model of the atom? A. It decribes electrons as particles B. it predicts that electrons should spiral into the nucleus C. the orbit of an electron cannot be described with certainty D. electrons don't exist

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda