Consider a molecule with the formula C3H1106N13. How many moles of hydrogen atoms are there if...
Using the below chemical equation, how many moles of magnesium are needed to react with 0.10 moles of oxygen gas? The molar mass of oxygen gas is 31.998 grams per mole and the molar mass of magnesium is 24.305 grams per mole. Make sure to include the correct unit symbol with the answer choice. 2Mg + O2 →→ 2MgO
8) What is the molarity (M) concentration of a solution when 18.37 grams of potasslum nitrite (KNO,) is dissolved in water to make 120 mL of solution ? GENERAL CHEMISTRY LABORATORY II 9) What will the final molarity concentration of the solution in question 8 if the volume is doubled? 10) How many milliliters of 0.153 M KMnO, solution are needed to react with 6.44 grams of iron(II) sulfate in aqueous solution? The balanced reaction is: 10 Feso, + 2...
1. The molecule carbon dioxide has the molecular formula CO2. a. How many carbon and oxygen atoms does each carbon dioxide molecule contain? b. Find the average mass of one carbon dioxide molecule in amu. Show how you reached your answer. C. How many moles of carbon atoms are there in 1 mole of carbon dioxide? d. How many moles of oxygen atoms are there in 1 mole of carbon dioxide? e. Find the mass of one mole of carbon...
How many milliliters of 0.210 M BaCl2 must be added to 12.4 mL of 0.418 M Na2SO4 to give complete reaction between their solutes? Volume of Ba2+ solution? One of the solids present in photographic film is silver bromide, AgBr. Suppose we want to prepare AgBr by the following precipitation reaction. 2AgNO3(aq) + CaBr2(aq) → 2AgBr(s) + Ca(NO3)2(aq) How many milliliters of 0.123 M CaBr2 solution must be used to react with the solute in 51.1 mL of 0.160 M...
How many atoms of copper (Cu) are contained in 1.75 moles of copper atoms? How many moles of aluminum ions (Al 3+) are present in 7.25 x 1025 Al 3+ ions? How many moles of aspirin contain 8.62 x 10 28 molecules? How many sugar molecules are contained in 0.475 mole of sugar? What is the molar mass of nicotine (C10H14N2), the toxic and addictive stimulant in tobacco? In this balanced chemical equation, 2 C18H30O2 + 49O2 à 36 CO2...
1.Determine the molarity of a solution that contains 8.4 moles of ethanol dissolved in 4.7 liters of solution. Answer to 2 decimal places. 2.Determine the mole fraction of ethanol, C2H5OH (Molar mass = 46.08 g/mol) when 13.4 grams of ethanol is dissolved in 96.1 grams of water, H2O (Molar mass = 18.02 g/mol).
How many grams of solute are present in 80.0 mL of 1.33 M CoSO4? (b) If 1.50 g of (NH4)2SO4 is dissolved in enough water to form 300. mL of solution, what is the molarity of the solution? (c) How many milliliters of 0.560 M NiCl2 contain 1.00 g of solute?
In a solution of Nicly, the cl' concentration is 0.017 M. How many grams of Nicly are in 538 mL of this solution? g NICI the tolerance is +/-2% For the reaction: Na2CO3(aq) + NiCl2(aq) → NICO3(s) + 2NaCl(aq) How many milliliters of 0.38 M NiCl solution are needed to react completely with 31.4 mL of 0.40 M Na2CO3 solution? mL NICI How many grams of Nicoz will be formed? g NICO: What is the molarity of an aqueous solution...
16.00 grans One to Two Formula: Two moles of hydrogen combine with a 21.008 Hj 2.016 grams General Formulas. The formula masses for all compounds are calculated by multiplying each element by its subscript. The subscript of an element indicates the number of times the element appears in the compound. 1.000 Water, H20 contains 2 hydrogen atoms for each oxygen atom. The formula mass is calculated by adding 2 times the mass of hydrogen and 1 times the mass of...
Question 13 Select the molarity of the solution prepared by dissolving 1.62 moles of NaBr in 5.88 liters of solution Selected Answer: 2.76M Correct Answer: 0.276 M Response Feedback: Incorrect Molarity - #moles of solute / # liters of solution. Question 14 Select the molarity of the solution prepared by dissolving 12.9 grams KF in 535 mL of solution: Selected Answer: 0.0241 M Correct Answer: 0.415 M Response Feedback: Incorrect! Let the units drive the solution: #grams x (1 mole/...