General Chemistry Answers

Whatever the solvent used, the solution should be topped-up to its final volume using water.

Some oxygen is collected in a 0.250 L container at 25.0C and 720.mmHg. How many moles of oxygen is

this?

What is the right ratio of chemicals for the given chemical equation?

__AgNO3 + __H2S --> __Ag2S+ __HNO3

When 5.25 moles of lithium reacts with excess calcium hydroxide in a single replacement reaction, how many grams of calcium are produced. The equation can be done by setting up an equation using what?

When 15.25 grams of A reacts with 34.22 grams of B, 18.69 grams of C is produced. How many grams of D are produced?

When 15.25 grams of A reacts with 34.22 grams of B, 18.69 grams of C is produced. How many grams of D are produced?

What is the osmotic pressure of an aqueous solution containing 0.2 mol of dissolved potassium chloride (completely dissociated) and 2 g of glucose at 37 ° C in 500 cm3?

A teacher needs to make 120.0 mL of a 4.00 M HCl solution using a stock solution with a concentration of 12.0 M. Determine the volume of 12.0 M HCl needed to make the dilution.

22. (a) Decane is a long chain alkane which can be cracked to form more useful products.

(i) Copy and complete the following equation to describe the cracking of decane to produce butane and compound X: C10H22(l) → C4H10(g) + X(l) (1 mark)

What is the mole fraction of Oxygen?

A. 0.1673

B. 0.2670

C. 0.2778

D. 0.4675

E. 0.5782