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Maria wants to plant a small tomato garden in her yard. She bought 25 tomato plants, and she has read that ideally tomatoes are planted in a square grid to help them pollinate each other. How many plants x should she plant in each row so that her 25 plants end up in a square?
Given the tabulated data, what is the lattice energy of crystalline calcium chloride?
Calculate the number of grams of sulfuric acid in 0.520 of battery acid if the solution has a density of 1.35 and is 37.4 sulfuric acid by mass.
At what tempature should 0.5 moles of nitrogen be held to maintain a pressure of 125 kpa in a 1.0L closed sealed container
The density of diamond is 3.51 g/cm . The international (but non-SI) unit for weighing diamonds is the "carat" (1 carat = 200 mg exactly.) What is volume of a 0.66 carat diamond?
Determine the molecular weight of a compound given the gas phase data: mass of 11.8 g, temperature of 39.1 C, pressure of 630 torr, volume of 1.31 L.
what is the PKa for the acid HA if a solution of 0.65 m and 0.85 M NaA has a PH 4.75
the rate constant for the second order -reaction is 2NOBr(g)------>2NO(g)+Br2(g) is 48 L/mol*min at a certian temperture. How long will it take for 90.0% of a .0200M solution of NOBr to decompose.
If a 2.743g sample of MgSO4.7H2O were heated strongly,what would be the expected mass of the cooled dehydrated salt
What is the volume of sulfur dioxide (SO2 gas), formed when 2 moles of carbon disulfide (CS2) are burned ?
Histidine has three ionisable functional groups. Write the equilibrium equations for its three ionizations and assign the proper pKa for each ionization.
Calculate the pH of this solution? if we want to lower the pH by one unit of this solution then How many mL of 0.1 M H 3 PO 4 should be added to this solution?
Using a sample of gas has a mass of 38.7mg. Calculate the molar mass if its volume is 228mL at a temperature of 57°C and a pressure of 832torr?
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