The atomic mass of an element is the sum of neutrons and A) atoms. B) electrons. C) isotopes. D) protons.

A similar experiment was used to determine the empirical formula of an oxide of tin (Sn). Use the data provided to answer the following question. Calculate the number of moles of oxygen in the oxide of tin sample. 0.0356 moles 0.131 moles 0.

In the inheritance pattern incomplete dominance offspring demonstrate an intermediate form of alleles from the parent. True or False

In a certain acidic solution at 25 ∘c, [h+] is 100 times greater than [oh - ]. what is the value for [oh - ] for the solution? in a certain acidic solution at 25, [] is 100 times greater than [ ]. what is the value for [ ] for the solution? 1.

Which statement about electronegativity is correct? A. Electronegativity decreases across a period. B. Electronegativity increases down a group. C. Metals generally have lower electronegativity values than non-metals. D.

What is the total pressure in a 2.00 L container that holds 1.00g He, 14.0g CO, and 10.0g of NO at 27 degree?

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.

How are the relationships of elements in a group different from the relationships of elements in a group