What element is denoted by 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d1

Which of the following examples does NOT describe nuclear fission? Bombarding uranium nuclei with beta particles to produce two lighter atomic nuclei. Colliding hydrogen atoms to produce heavier helium atoms.

Water is separated into oxygen gas (o2) and hydrogen gas (h2) using a process called electrolysis. after electrolysis, 0.15 moles of hydrogen gas are collected at stp. what is the volume of 0.15 moles of hydrogen gas obtained at stp?

Which of the following is the trend down a period? A. The number of complete electron shells increases by one. B. The number of complete electron shells stays the same. C. The number of outer shell electrons decreases by one. D. None of these.

1. What is the term for a state of matter that has a definite volume and a definite shape?

What releases hydroxide ions when dissolved in water?

The volume of a gas is reduced from 4 L to 0.5 L while the temperature is held constant. How does the gas pressure change? It increases by a factor of two. It increases by a factor of eight. It decreases by a factor of eight.

Write the complete balanced equation for the decomposition of sodium chloride (NaCl)

What is the term for the different phases water can take?

The amazing successes of science are because scientists have followed the rules of science True or false

In this assignment, you will write and balance a chemical equation. Then, you will use a table of enthalpy values to calculate the energy change in the reaction. Next, you will create a model of the energy change in the reaction.