If a sample of this compound contains 5.1×1023 magnesium ions, how many nitride ions does it contain?
Express your answer using two significant figures.
The problem is based on mole concept
1 mole = 6.02×10^23 molecules
The calculations are as follows
If a sample of this compound contains 5.1×1023 magnesium ions, how many nitride ions does it...
A sample of the male sex hormone testosterone, C19H28O2, contains 3.98×1021 atoms of hydrogen. How many atoms of carbon does it contain? Express your answer in atoms to three significant figures. How many molecules of testosterone does it contain? Express your answer in molecules to three significant figures.
A tablet contains 238 mg of magnesium chloride (MgCl2 MW = 95.2 g/mol). How many milliequivalents of magnesium ions does the tablet contain? Assume complete disassociation. (Round your answer to the nearest whole number of milliequivalents. How is this worked out? The answer is 5
An ionic compound forms when calcium (Z = 20) reacts with iodine (Z = 53). If a sample of the compound contains 9.49 × 1023 calcium ions, how many iodide ions does it contain? (Enter your answer in scientific notation.)
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.
Problem 6.22 6 of 21 (> Con PartA How many Ar+ ions are in a mole of AlBry? Express your answer using four significant figures. Submit Request Answer Part B How many Br ions are in a mole of AlBr3? Express your answer using four significant figures. Submit Request Answer Provide Feedback O Type here to search
Part D Calculate the number of moles of C,Hg in 2.01 x 1023 molecules of C, H. Express your answer using three significant figures. O ALDO ? moles of C,H Submit Previous Answers Request Answer Part C How many moles of sulfate ions (SO?) are present in 1.6 moles of Al2(SO4),? Express the number of moles to two significant figures. - Po A¢ * Ro ? ns0 moles
If a sample of C-14 initially contains 1.4 mmol of C-14, how many millimoles will be left after 2275 years? Express your answer in millimoles using two significant figures. Note: The half-life for the radioactive decay of C-14 is 5730 years.
how many Cu2+ ions are in a mole of CuSO4 Part A 21 How many Cu ions are in a mole of CuSO4? Express your answer using four significant figures. N= Submit My Answers Give Up
a 9.17g sample of co3(po4)2 contains how many ions Consider the compound cobalt(11) phosphate, Co3(PO4)2. A 9.17 g sample of Co3(PO4)2 contains how many ions? 6.01x1023 1.50x1024 O 7.96 1022 6.02x1024 Moving to another question will save this response.
How many NaCl formula units does it contain? Express your answer using two significant figures. A salt crystal has a mass of 0.16 mg .