7.50 kg oxygen=__ grams of CO2 (type only numbers-no units - 3 significant figures only)

What do the dots around a symbol in a lewis structure represent? a. shared electrons b. valence electrons c. s orbital electrons d. bonding electrons

By which of the following features is Venus characterized? A. It is the nearest planet to the sun. B. It has a dense atmosphere of mostly carbon dioxide. C. It has a very thin atmosphere because of the solar wind. D. It is much larger than the Earth.

How many significant figures are there in the measurement 64,000 mg? A. 2 B. 3 C. 4 D. 5 (Possibly A but idk)

Determine the number of protons and neutrons in plutonium-239 and write its symbol in the form azx.

How many calories is required to change the temperature of 2.18g of water from 15.3°C to 69.5°C. The specific heat of liquid water is 1.00cal/g°C.

Could acetic acid be used in the esterification, instead of acetyl chloride? Why or why not?

9. In a sample of gas, what causes pressure? Answer in a completesentence.

Sodium (Na) reacts with chlorine gas (Cl2 ) to form sodium chloride (NaCl) as shown in the equation: 2Na + Cl2 → 2NaCl If 4 moles of chlorine gas react, how many moles of sodium will react?

What are transuranium elements properties?

A geologist finds a section of rock that shows was ripple marks. What does it he pr send me or a ripple marks say about the area where the rock formed? A. the rock from rk s in a fast moving stream B.