What does it mean if the plus sign is positive for the sodium atom?

When the sentence best describes mass movement

If 15.6 g of hydrate are heated and only 11.7 g of anhydrous salt remain, calculate the % of water lost.

Which of the following is most likely to be a covalently bonded, polar compound? Question 6 options: NaCl NH 3 CCl 4 CH 4 Which of the following compounds is a molecule? Question 7 options: AlCl 3 H 2 NaCl MgBr 2

Which statement best descibes what happens when a person sees a orange t-shirt? A. Orange light absorbed by the t-shirt is perceived by the human eye. B. Orange light reflected from the t-shirt enters human eyes. C.

Balance the following redox equation in acidic solution using the smallest integers possible and select the correct coefficient for the H + (aq) ion. Cr2O72 - (aq) + Sn2 + (aq) → Cr3 + (aq) + Sn4 + (aq) a. 1 (no coefficient written) b. 2 c. 3 d. 4 e.

Difference between radical and compound

Water is a produced when 30.0 grams of hydrogen reacts with 80.0 grams of oxygen what is the limiting reagent

How are reactions and products related in a chemical reaction?

Ollie wants to sign up with an online social network called TeensMeet, which other kids at school have joined.

7. A perfect cube has a width of 2 cm. What is the cube's volume? Show your work!