How many moles are needed to make 2.5 L of a 3.8 M solution?

9.5 mol

0.66 mol

1.5 mol

15 mol

Saturated hydrocarbons are major components of ... [A] vegetable oil. [B] alcohol. [C] gasoline. [D] salt crystals.

What are two things that happened as a blood passes the lungs?

Suppose of potassium iodide is dissolved in of a aqueous solution of silver nitrate. Calculate the final molarity of potassium cation in the solution.

If 15 drops of ethanol from a medicine dropper weigh 0.60g, how many drops does it takes from a dropper to dispense 1.0ml of ethanol? Density of ethanol is ethanol is 0.80g/ml.

A student prepared a stock solution by dissolving 2.50 g of KOH in enough water to make 150. mL of solution. She then took 15.0 mL of the stock solution and diluted it with enough water to make water to make 65.0 mL of a final solution.

Ammonia (NH3) burns in air to form nitrogen dioxide and water. Calculate grams of nitrogen dioxide produced if 4.0 grams of ammonia are consumed

What year did mendeleev organized his periodic table in order of increasing atomic number

What is the volume of 1.9 moles of chlorine gas (Cl2) at standard temperature and pressure (STP) ? 12 L 22.4 L 43 L 81 L

This decomposition is first order with respect to phosphine, and has a half‑life of 35.0 s at 953 K. Calculate the partial pressure of hydrogen gas that is present after 70.5 s if a 2.20 L vessel containing 2.

A new element has two isotopes, one with a mass of 40.0 amu and the other with a mass of 42.0 amu. the atomic weight is 40.50 g/mol. pick the true statement a. the isotope at 42.0 amu is less abundant b. the element has 19 protons and 21 neutrons c.