What is the concentration of each of these solutions expressed as a percent sucrose by mass?

a) 17g sucrose dissolved in 183g water

b) 30.0g sucrose dissolved in 300.0g water

When two hydrogen atoms bond with one oxygen Atom to form water what happens to the electrons

What are some physical properties of metals?

Each particle contained in hydrogen gas is made up of two identical hydrogen atoms chemically joined together. hydrogen gas is

Which of the following is not a correct chemical equation for a double replacement reaction? 2 HNO3 + Mg (OH) 2 yields 2 H2O + Mg (NO3) 2 H3PO4 + 3 NaF yields 3 HF + Na3PO4 2 KNO2 + BaSO4 yields K2SO4 + Ba (NO2) 2 Ca + 2H2O yields Ca (OH) 2 + H2

Which of these substances are elements? more than 1 answer 1. silicon 2. lead 3. silicone 4. water 5. iodine 6. quartz

How many grams of water form when 1.24 l of gas h2 at stp completely reacts with o2?

According to the following reaction, how many grams of hydrogen peroxide ( H 2 O 2 ) are necessary to form 0.182 moles oxygen gas? hydrogen peroxide ( H 2 O 2 ) (aq) → water (l) + oxygen (g)

Using the bohr model describe the changes in electrons energy and electron location when an atom changes from the ground state to an excited state.

Sally is making a model of gold for her chemistry class. She has foam balls for the protons, neutrons, and electrons. She has added 70 protons to her model so far. How many more protons does she need to add to complete her neutral atom of gold?

How many electrons are in an atoms of germanium