How many millimoles are contained in 9.14 g of Na2B4O7·10 H2O?
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How many H2O molecules are contained in 1.50 L of water? Assume the density of water is 1.00 g/mL. How many H atoms are contained in 1.50 L of water? Assume the density of water is 1.00 g/mL. please show work, thanks
Conversion of Acetaminophen into Phenacetin Write the chemical equation Calculate the millimoles contained in 1.30 g of acetaminophen and in 2.50 g of K2CO3. What volume of ethyl iodide corresponds to 1.8 g? Why is acetaminophen soluble in 5% aqueous NaOH, while phenacetin is not? Calculate the theoretical yield of phenacetin.
how many molecules are contained in a 7.05 How many molecules are contained in a 7.05-g sample of dimethylmercury? Express your answer in molecules to three significant figures. What is the percentage of mercury (by mass) in the sample? Express your answer as a percent to four significant figures.
1.) How many millimoles of 10mg/L of potassium chloride if MW is 74.5? 2.) How many millimoles of 10mg/L of monobasic sodium phosphate NaHPO4 (MW is 138)?
How many grams of ethanol are in 2.71 millimoles (mmol) of ethanol?
how many moles of water, H2O, are present in 25.0 g H2O? How many moles of water, H20, are present in 25.0 g H20? 4.41 moles 0.56 moles O 1.39 moles 7.50 moles 1.35 x 103 moles
How many moles of atoms are contained in 14.6 g of Br2?
10. How many grams of H2O(g) are produced at the same time that 45 kJ of energy are produced? Is this an endothermic or an exothermic reaction? Explain. The thermochemical equation is: 2C4H10(g)+13O2(g) 8CO2(g) +10H20(g) +5.77 x 103 kJ
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...
Given 73.7200 g of caffeine and the following atomic weights, how many mmoles (millimoles) of caffeine do you have? Remember that a mmoles is 1/1000 of a mole. Round to a whole number answer with no decimal or units. C = 12, H = 1, N =14, O = 16 2) Question text Assuming that the manufacturer claimed that your tea had 26 mg of caffeine per gram, that you weighted out 15.2090 g of tea, but you isolated only...