Thursday
December 12, 2013

# Posts by smith

Total # Posts: 81

chemistry
If 2.1 moles of CaCl2 are dissolved in enough water to make a 0.92-liter solution, what is the resulting molarity?

chemistry
if it requires 35.0 milliliters of 0.50 molar NaOH to neutralize 25.0 milliliters of HCl, what is the concentration of the HCl solution? Balanced equation: NaOH + HCl yields NaCl + H2O

chemistry
If 2.1 moles of CaCl2 are dissolved in enough water to make a 0.92-liter solution, what is the resulting molarity? 0.44 M CaCl2 0.70 M CaCl2 2.3 M CaCl2 3.0 M CaCl2

chemistry
Water is a polar solvent. Which of the following will not dissolve in water? sugar table salt vinegar olive oil

chemistry
How many liters of fluorine gas, at standard temperature and pressure, will react with 23.5 grams of potassium metal?

chemistry
Under certain conditions, neon (Ne) gas diffuses at a rate of 7.0 centimeters per second. Under the same conditions, an unknown gas diffuses at a rate of 4.9 centimeters per second. What is the approximate molar mass of the unknown gas? 6.5 g/mol 11 g/mol 20 g/mol 41 g/mol

chemistry
78.4 liters thank you!

chemistry
What is the volume of 3.5 moles of oxygen gas (O2) at standard temperature and pressure (STP)? 6.4 L 22.4 L 32.0 L 78.4 L

chemistry
Which of the following gases effuses the fastest at a given temperature? Ne CH4 Ar H2

chemistry
How many grams of methane gas (CH4) are in a 15.8 liter sample at 1.2 atmospheres and 27°C

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