What is a rock made out of shells and corals cemented together

Indicate whether each of the following statements about a process in a closed system with a constant volume is always true, false, or true in certain conditions (specify the conditions) : Calculate the heat that must be supplied to 0.

Which is a net ionic equation for the neutralization of a weak acid with a strong base? which is a net ionic equation for the neutralization of a weak acid with a strong base?

Is flat soda mixture or pure substance?

A 3.0-milliliter sample of HNO3 solution is exactly neutralized by 6.0 milliliters of 0.50 M KOH. What is the molarity of the HNO3 sample? 1. 1.0 M 2. 0.50 M 3. 3.0 M 4. 1.5 M

Which of the following units is rarely, if ever, used in science labs? A. centimeter B. gram C. quart D. milliliter

Write the formula of each compound, and determine its molecular (formula) mass: (a) sodium dichromate; (b) ammonium Perchlorate; (c) magnesium nitrite trihydrate.

Calculate the pH of a (0.000765) M solution of KOH

What kind of solid is crystalline boron

Cl2F2 (g) + 2NaCl (aq) = 2NaF (aq) + Cl2 (g)

Is there more than100 elements in the periodic table?