How many atoms of oxygen are present in the water
1. How many atoms of Oxygen are there in 18g of water?
2. What is the mass of 1 mole of O2?
3. What is the density of O2 at STP?3L of a gas, weigh 2g.
4. What is the molecular mass? What volume does 22g of CO2 at STP occupy?
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Determine the volume flow rate in m^3/s, at the engines inlet and the mass flow rate in kg/s, at the engines exit assume no mass accumulation inside the engine.
For a population with a mean of µ = 50 and a standard deviation of ? = 10, how much error, on average, would you expect between the sample mean (M) and the population mean for:
The magnetic flux passing through a single loop in a transformer changes at a rate of 9.5 Wb/s. The primary coil has 40 loops and the secondary coil has 862 loops. Find the voltage in each coil.
The toothpick mass was 0.1 g, its speed before entering the branch was 216 m/s, and its penetration depth was 18 mm. If its speed was decreased at a uniform rate, what was the magnitude of the force of the branch on the toothpick?
What is the mass of 1 mole of O2? What is the density of O2 at STP?3L of a gas, weigh 2g. What is the molecular mass? What volume does 22g of CO2 at STP occupy?
What is the maximum power that can be dissipated from the surface without causing damage to the electronics, which would occur at an average surface temperature exceeding 50 degree C?
Four 7.6 kg shperes are located at the corners of a square of side .76 meters. Calculate the magnitude and direction of the total gravitational force exerted on one sphere by the other three.
Calculate the concentration of Pb2+ ions in solution when PbCl2 is dissolved in water. The concentration of Cl- ions in this solution is found to be 2.86 x 10-2 M. At 25oC, the Kspof PbCl2 is 1.17 x 10-5
Your friend is working for the engineering department and makes $65 per week. The probability that your total earnings in 100 weeks are more than hers is approximately?
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