How many yards are there in 2.5km? One yard is exactly 0.9144m. give answer in scientific...
How many moles of oxygen are in 8.9E-1 moles of CO_2 2 ? Only give the numeric value of your answer. Don’t include the units. Respond with the correct number of significant figures in scientific notation (Use E notation and only 1 digit before decimal e.g. 2.5E5 for 2.5 x 10⁵)
How many moles of fluorine atoms are there in (3.20x1042) grams of SF4? Give your answer in scientific notation with 3 significant figures. Do not put your answer. Remember, in scientific notation you must include an exponent, even if that exponent is zero. any units in Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer
Roughly how many heartbeats are there in a lifetime? Express your answer in scientific notation.
How many carbon atoms are present in 5.000 × 10−4 mol of carbon? Give your answer in scientific notation.
How many atoms of hydrogen are in 2.22E+1 g of methane? Respond with the correct number of significant figures in scientific notation (Use E notation and only 1 digit before decimal e.g. 2.5e5 for 2.5 x 10") How many moles of oxygen atoms are in 5.3E-1 moles of CO2? Only give the numeric value of your answer. Don't include the units. .- Respond with the correct number of significant figures in scientific notation (Use E notation and only 1 digit...
Solve the problem. 13) The Jones' den is 19ft by 27t, how many square yards of carpet are needed to cover the whole floor? If the carpet costs $91.98 per square yard installed (including pad and laborj, how much will it cost to carpet this den? [you can not buy a portion of a square yard] 13)
In a 2.86E+1 g sample of NaHCO3, how many grams of sodium are present? Use two decimal places in atomic masses. Only give the numeric value of your answer. Don't include the units. i Respond with the correct number of significant figures in scientific notation (Use E notation and only 1 digit before decimal e.g. 2.5e5 for 2.5 x 105) In a 1.018E+2 g sample of iron(111) oxide, how many grams of iron are present? Your answer should have the...
How many cubic yards of concrete are needed to pour the highway support shown in the figure? (1 yd3 = 27 ft3.) (Round to nearest cubic yard.) Mathematics for the Trades: A Guided Approach, 10th Edition Problem sets 9 B # 2
How many moles is 0.276 g of calcium oxalate monohydrate, Ca(C2O4)·H2O? Report your answer in scientific notation in this form: 1.234e56.
How many molecules are present in 1.0 mol of sulfuric acid (H2SO4)? (You may use scientific notation. If your correct answer is e.g. 1189 enter 1.189E+3) molecules the tolerance is +/-2% How many atoms are present in 1.0 mol of sulfuric acid? (You may use scientific notation. If your correct answer is e.g. 1189 enter 1.189E+3) atoms