General Chemistry Answers

What volume of carbon dioxide (in L) will 3.26 g of antacid made of calcium carbonate produce at 37.0 °C and 1.00 atm in the stomach according to the following reaction?

CaCO₃ (s) + 2 HCl (aq) → CaCl₂ (aq) + H₂O (l) + CO₂ (g)

What volume of carbon dioxide (in L) will 3.26 g of antacid made of calcium carbonate produce at 37.0 °C and 1.00 atm in the stomach according to the following reaction?

CaCO₃ (s) + 2 HCl (aq) → CaCl₂ (aq) + H₂O (l) + CO₂ (g)

How many molecules of tetrahydrofuran (C4H8O) are present in 2.00 x 10-9 mol of

tetrahydrofuran?

You will experimentally determine the volume of a sample of gas at both a higher temperature and

a lower temperature. You will graph your results, with volume (mL) on the y-axis and the

temperature (°C) on the x-axis. After you have graphed these data, you will extrapolate (extend)

your line between these two points to intersect the x-axis at a point where the volume would be

zero. This value of temperature at the intersection point will represent the temperature when the

volume of gas would be equal to zero, and therefore the value for absolute zero on the Celsius

scale.

If you start with a pressure (P1) of 1.2 atm and a volume (V1) of 2.5 L, and change the pressure

to 3.6 atm (P2), what would be the resultant volume (V2)?

Are your results consistent with Boyle's Law? That is, is the product of P x V constant (within

experimental error)? What shape is given by the graph when you plot Pressure vs. Volume? Is

This consistent with an inversely proportional relationship between the variables?

what is 79 protons 118 neutrons, 79 electrons

A chemist measured the amount of lithium fluoride produced during an experiment. She finds that 8.21g of lithium fluoride is produced. Calculate the number of moles of lithium fluoride produced. Round your answer to 3 significant digits.