1. What is the speed of a plane if it travels 5000 meters in 60 seconds?

In an atom of argon-40, the number of protons a. equals the number of electrons b. equals the number of neutrons c. is less than the number of electrons d. is greater than the number of electr

Which subatomic particle plays the greatest part in determining the properties of an element? a. electron b. none of the above c. neutron d. proton

Which of the following reactions is possible according to Dalton's atomic theory? View Available Hint (s) Which of the following reactions is possible according to Dalton's atomic theory? N2→O2 N2+O2→2NO CO2→NO2 H2O→H2S

One student in the group questioned the prediction. "How can heat energy move? There is nothing moving from the can to the cup!" How would you respond to this student? A) The student is correct.

Water has a specific heat of 4.186 J/g° c. How much heat is required to increase 10.0g of water from 25.0°C to 30.0°C?

What can you tell about the rate of the two reactions shown in the graph?

You have 40 g of a radioisotope. If the half-life of this radioisotope is 4 days, how many grams will remain after 12 days?

What does it mean to say water is 11% hydrogen by mass

Will helium, neon, or argon atoms react with other atoms?

How many sulfur atoms are there in 5.52 mol of sulfur