If element X has 49 protons, how many electrons does it have? Your Answer:

Why do we use ammonium formate as a hydrogen surrogate instead of using hydrogen gas in this experiment?

The standard reduction potentials of lithium metal and chlorine gas are as follows:Reaction Reduction potential (V) Li + (aq) + e-→Li (s) - 3.04Cl2 (g) + 2e-→2Cl - (aq) + 1.

How did the discoveries of scandium (sc) and germanium (ge) affect mendeleevâs work?

If all the N2 and H2 are consumed, what volume of NH3, at the same temperature and pressure, will be produced? At a certain temperature and pressure, 1.9 L of N2 reacts with 5.7 L of H2.

When 1.5 grams of magnesium burns, how many grams of magnesium oxide will be formed? a. write a balanced chemical equation for the above reaction. b. show by unit conversion (show conversion factors, ie. 2 g h20 x 1 mole h2o/18 g h2o x ... x ...

The relationship between pressure and temperature of a gas, when volume and moles of a gas are held constant, is: P*T = k. TRUE FALSE

The system is said to be in dynamic equilibrium when: Select one: a. there is no longer any net change in the concentrations of products or reactants. b. the forward and reverse reactions come to a halt. c. None of these d.

You have a 1 L container of a gas at 20 C and 1 atm. Without opening the container, how could you tell whether the gas is chlorine or fluorine? a. measure the mass of the gas b. measure the speed of the gas molecules c.

A 1.268 g sample of a metal carbonate, MCO3, was treated 100.00 mL of 0.1083 M H2SO4, yielding CO2 gas and an aqueous solution of the metal sulfate. The solution was boiled to remove all of the dissolved CO2 and then was titrated with 0.1241 M NaOH.

1. According to the article, which country may have a greater population than China by the year 2050? A. China B. Kenya C. India D. Germany 2. What does the article list as one reason that drives couples in India to have more children? A.