Consider a 2.41 mol sample of C 9 H 18 . How many atoms of H would be in this sample? Report your answer with 3 significant figures and in scientific notation.
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How many nitrogen atoms are present in a 1.73 g sample of molecular nitrogen? You must report the answer in scientific notation displaying only 3 significant figures Formatting convention that must be used to input a number in written in scientific notation: 1.22 x 104 1.22E2
Consider a 2.72 mol sample of C3H4. How many atoms of H would be in this sample?
How many atoms of copper are present in a 4.8 g sample of copper metal? Express your answer to two significant figures. TIP: To report an answer in scientific notation, enter it using the format "2.3E4", which means "2.3 x 104" (without the quotation marks)
How many atoms are in each elemental sample? Part A.) 3.8 mol Cu Express your answer using two significant figures. Part B.) 5.1×10−3 mol C Express your answer using two significant figures. Part C.) 16.1 mol Hg Express your answer using three significant figures. Part D) 0.235 mol Na Express your answer using three significant figures.
How many atoms are in each elemental sample? 1. 8.6×10−3 mol C Express your answer using two significant figures. 2. 29.3 mol Hg 3. 0.260 mol Na
A sample of sulfur trioxide (SO3) weighs 5100g. How many molecules are contained in this sample? Use 80.063 the molar mass of SO3. Use 6.022 x 1023 mol-1 for Avogadro's number. Report your answer in scientific notation.Your answer should have two significant figures.
How many C atoms are present in the sample of C3H8 with mass 4.41 g? Avogadro’s number is 6.022 × 1023. Answer using scientific notation and to three significant digits.
How many hydrogen atoms are in a 20.0000 oz. glass of water? Assume the sample is pure water and neglect the glass. Show work please and proper significant figures and scientific notation.
Be sure to answer all parts. How many mol of platinum (Pt) atoms are equivalent to one billion platinum atoms? Enter your answer in scientific notation. _×10_mol Pt (select)−11−19−9−17−13−15
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...