What is the molarity of glucose C6H12O6 if 360 grams of glucose is dissolved in 200 mL of water? (molar mass: C = 12 g/mol, H = 1 g/mol, and O = 16 g/mol)
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Describe what happens to the average kinetic energy of ideal…
Describe what happens to the average kinetic energy of ideal gas molecules when the conditions are changed as follows. If the kinetic energy remains the same it will be marked with an S, if the kinetic energy increases it will be marked by an I and if the kinetic energy decreases it will be marked by a D. Choose the correct grouping. (a) The pressure of the gas is increased by reducing the volume at constant temperature.(b) The pressure of the gas is increased by increasing the temperature at constant volume.(c) The average velocity of the molecules is increased by a factor of 2.
Suppose you drove east to a grocery store and returned home…
Suppose you drove east to a grocery store and returned home in half an hour. Your car’s odometer showed the total distance traveled at 20 km. What was your average speed?
An ideal radiator of surface area 0.1 m2 radiates 250,000 J…
An ideal radiator of surface area 0.1 m2 radiates 250,000 J of heat every 2 seconds. Find the temperature of this radiator.
C12H22O11(aq)+H2O⟶YeastEnzymes4C2H5OH(aq)+4CO2(g) In the m…
C12H22O11(aq)+H2O⟶YeastEnzymes4C2H5OH(aq)+4CO2(g) In the making of beer, yeast converts the sugar maltose to ethanol and carbon dioxide during anaerobic fermentation as depicted in the simple chemical equation below: Maltose + water → ethanol + carbon dioxide If 342.3 g of maltose and 18.0 g of water are fully converted to ethanol and 176.0 g of carbon dioxide, what mass of ethanol is produced?
In the example below, the scientific method is used to solve…
In the example below, the scientific method is used to solve a daily life problem. Choose the correct order of the scientific method steps (numbered items) with the process of solving the everyday problem (lettered items). Observation Question Hypothesis Prediction Experiment Result If something is wrong with the outlet, my microwave also won’t work when plugged into it. There is something wrong with the electrical outlet. I plug my microwave into the outlet. My microwave works. Why doesn’t my toaster work? My toaster doesn’t toast my bread.
Consider the following chemical reaction: 2NH3 → N2 + 3H2 It…
Consider the following chemical reaction: 2NH3 → N2 + 3H2 It was found that the rate of production of hydrogen, H2, is 0.39 mol L-1 S-1. What is the rate of decomposition of ammonia?
From their positions in the periodic table, arrange the atom…
From their positions in the periodic table, arrange the atoms in each of the following series in order of increasing electronegativity: Ba, H, N, O, As
Eric’s car, which weighs 1000 kg, is out of gas. Eric is try…
Eric’s car, which weighs 1000 kg, is out of gas. Eric is trying to push the car to a gas station, and he makes the car move at 0.06 m/s2. Can you calculate how much force Eric is applying to the car? (Ignore the friction)
Suppose an oxygen tank has a pressure of 120 atm at a temper…
Suppose an oxygen tank has a pressure of 120 atm at a temperature of 25°C. If the temperature increases to 31°C, what will the final pressure of the oxygen tank be if the volume and amount of the oxygen are held constant?