When 0.2mol of calcium reacts with 880g of water 2.24L of hydrogen gas form at STP How would the amount of hydrogen produced change if the volume of water was decreased to 440mL 400g?

Which equation represents a nuclear reaction that an example of an artificial transmutation? 1) 43/21 Sc-->43/20 Ca + 0/+1 e 2) 14/7 N + 4/2 He - - > 17/8 O + 1/1 H 3) 10/4Be-->10/5B+0/-1e 4) 14/6C-->14/7N+0/-1e

Which part of the electrochemical cell allows the back-and-forth passage of ions from the cathode to the anode? the half cell the voltmeter the electrode the salt bridge

Which statement best describes the trend in atomic radii observed in the periodic table? 1. The atomic radii increase, moving across a period to the right and up in a group. 2.

What is the mass percent of NaCl in a solution made by dissolving 23.0 g of NaCl in 150.0 g of water?

What is equal solute concentration inside and outside of the cell so water moves at equal rates?

Give me an example of lustre that is shiny and dull.

Which of the following animal niches will be filled as in ecosystem Begins the stage of ecological succession

List the five major pollutants in the United States

The net gain of atp per molecule of glucose fermented is

What is the name of this compound? CH3-CH2-CH2-CH2-O-C6H5 butylphenyl ether cyclohexylbutyl ether phenylbutyl ether butylcyclohexyl ether