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5. How many milliliters of a 518 mL solution of 2 M K3PO4 must be used to make 302 mL of a solution that has 0.89 moles of K+?
6. A 12 mL sample of a solution of AlBr3 was diluted with water to 42 mL. A 30 mL sample of the dilute solution was found to contain 2.26 M Br-. What was the concentration of AlBr3 in the original undiluted solution?
What are the pH values if you take into account that the 8.00 mL of 0.10 M Acid was first diluted with 100 mL of water
What Mass of K2CO3 must you add to 125 grams of water to prepare a 0.200m K2CO3? What is the mole fraction of K2CO3 in the resulting solution?
1. In a plot of absorbance verus time, what are the units for the slope 2. Assuming a pathlength of 1 cm
Ammonia is both a donor and an acceptor of hydrogen in hydrogen-bond formation. Draw a diagram showing the hydrogen bonding of an ammonia molecule with two other ammonia molecules.
describe how will you prepare a supersaturated solution of potassium nitrate in water.
Express the pressure values numerically in atmospheres, separated by commas. Enter the partial pressure of methane first, then ethane, then propane.
The molecular mass of propanoic acid is 75.1 amu. Calculate the molecular mass of methyl ethanoate, an isomer of propanoic acid. Express your answer with appropriate units.
What is the probability of a 14C decay taking place in the lungs during a single breath? The atmosphere is about 0.04% CO2, and in an average breath we inhale about 0.5 l of air and exhale it about 3.5 s later.
1.Which contains the most atoms of chromium? 0.025mol,6.0*10^21 atoms, or 1.5g of Cr?
what is the concentration of glyceraldehyde-3-phosphate? Assume a temperature of 25.0 °C. The constant R = 8.3145 J/(mol·K)
Determine if the following solution is acidic, basic or neutral and then calculate the pH of each. Assume T = 25°C.
Nitrogen and oxygen do not react appreciably at room temperature, as illustrated by our atmosphere. But at high temperatures, the reaction below can proceed to a measurable extent.
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