Do two compounds form a mixture or a pure substance when you put them together mechanically, such as by stirring?

Which balanced equation represents an endothermic reaction? (1) C (s) + O2 (g) → CO2 (g) (2) CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (l) (3) N2 (g) + 3H2 (g) → 2NH3 (g) (4) N2 (g) + O2 (g) → 2NO (g)

If you had 240 L container at 479 k and 300 kpa, what would the volume be if you changed the conditions to STP

Find the pH of a solution that contains 3.25 g of H2SO4 (MM = 98.08 g/mol) dissolved in 2.75 liters of solution. (Hint diprotic acid)

Al and Bob are arguing about their algorithms. Al claims his O (nlogn) - time method is always faster than Bob's O (n^2) - time method. To settle the issue, they perform a set of experiments.

What is difference between cathod ray and electricity

What holds the ions together in galena?

Which of the following is an example of a defined contribution plan?' a) 401 (k) b) Keogh plan c) Both a and b

The molar absorptivity constant of a particular chemical is 2.16 M·cm. What is the concentration of a solution made from this chemical that has an absorbance of 0.458 with a cell path length of 1.01 cm?

1. The transmits light & supports the structure of the eye A. Retina B. Chorid C. Vitreous Humor D. Lens em to the

What volume (ml) of a concentrated solution of magnesium chloride (9.00 m) must be diluted to 350.0 ml to make a 2.75 m solution of magnesium chloride?