What is the percent by mass of NaCl in a solution containing 3.6 g NaCl dissolved in water to make a 100.0 mL solution? (Hint: 1 mL of water = 1 g of water)

a. 0.035%

b. 3.5%

c. 3.6%

How many electrons does Vanadium have on its highest energy level?

Hydrogen peroxide is toxic to cells, yet is a common byproduct of the reactions that occur inside the body. how can this compound be changed to become non-toxic (hint: look at the chemical formula of hydrogen peroxide).

What do scientist use to describe chemical reactions

A sample of octane (c8h18 that has a mass of 0.750 g is burned in a bomb calorimeter. as a result, the temperature of the calorimeter increases from 21.0°c to 41.0°c. the specific heat of the calorimeter is 1.50 j / (g °c, and its mass is 1.00 kg.

When a scientist analyzes experimental results, the scientist is generally?

A molecule has four bonded atoms around a central atom. The central atom does not have any lone pairs of electrons. What is the geometry of the molecule? Bent Linear Trigonal planar Tetrahedral

Using the periodic tables, identify the heaviest member of each of the following groups: (a) alkali metals (b) chalcogens (c) noble gases (d) alkaline earth metals

Select the best answer for the question. 13. Which statement accurately describes the relationship between mass and weight? A. An object with twice the mass of another object will weigh twice as much B.

Which of the following accurately describes carbon atoms? A. When carbon atoms bond to other carbon atoms, they can only form triple bonds. B. Carbon atoms can bond to other carbon atoms. C.

On a separate sheet of paper, write the formulas for each of the following, complete and balance 1. iron + copper (II) sulfate 2. potassium chloride + mercury (I) sulfate 3. sulfur + oxygen