Assignment 1. A Certain volume of a gas at 2a8k is
Theated
Such that its volume and pressure
are now 4 times their original value. What's
the new temperature?
2. 50cm of hydrogen fare sparked with 20 cm
of oxygen at looc and latm. What is the
total volume of the residual gases.
3. llocm² of Carbon(i) oxide is mited and sparked
with Loocm' air Containing 21%O₂ If all
the volume are measured at sat op, Calculate
the volume of the resulting gases.​

Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)

You have a liquid that exhibits diltancy. you want to pour it from a bottle. what should you do to the bottle before pouring