A sample of grape juice has a hydroxide ion concentration of 1.4 × 10-10 M. Is the grape juice more or less acidic than a sample of orange juice that has a hydronium ion concentration of 1.8 × 10-4 M? To compare the acidity of the orange juice and grape juice, compare the hydronium ion concentrations and/or pH values of the two solutions. How does the acidity of a solution vary with hydronium ion concentration and pH?
A 500 N traffic light hangs from 2 support cables. The angle of each support cable is 52 degrees. What is the tension force in each cable?
List the following bonds in order of increasing ionic character. the lithium-to-fluorine bond in Li-F the potassium-to-chlorine bond in KCl the lithium-to-lithium bond in Li the chlorine-to-fluorine bond in ClF3 the potassium-to-bromine bond in K-Br
You are holding a small helium balloon. Your friend says that the buoyant force from the atmosphere is greater on her car than your balloon. Is she correct? Explain your answer.
How is a tornado different from a hurricane A. A tornado causes less damage to an ecosystem B. A tornado brings more rain C. A tornado is much smaller D. Hurricanes do not impact life on land
A university class has 12 students enrolled, 2 of whom are graduate students. What is the probability that a randomly chosen student will be a graduate student? Write your answer as a fraction or whole number. P(graduate student) =
true or false energy is released from ATP when it reacts with water to pro duce ADPtrue or false the information that cells need to direct their metabolic process is stored in RNAbtw it biology
Part A When a 0.235-g sample of benzoic acid is combusted in a bomb calorimeter, the temperature rises 1.641 "C. When a 0 255-g sample of caffeine, C₂ HO₂N₁ is bumed, the temperature rises 1.457 °C. Using the value 26.38 kJ/g for the heat of combustion of benzoic acid, calculate the heat of combustion per mole of caffeine at constant volume 5 ΑΣΦ 4 ? kJ/mol
