If there are 7 moles of copper dissolved in 15 moles of zinc to make 22 moles of a brass solution. What is the mole fraction of copper?

What is the relation between an equation and experiment.?

What is hydrogen bond?

you are on spring break and you won a bunch of balloons at a carnival in the mountains of Georgie. You are now driving back to Florida. You take the balloons with you in the car. As you go down the mountain what happens to the balloons and why?

Which type of rock is most likely to form because of high heat and pressure? igneous magma sediment metamorphic

In the reaction 2H2 + O2 → __H2O, what coefficient should be placed in front of H2O to balance the reaction? A-1 B-2 C-3 D - no coefficient is needed

Trevor watches as a freight train passes. He counts eight identical black railroad cars, then a red car, followed by several more black cars.

How long does a hydrogen bond last in water

If the body temperature of a person is recorded as 37°c, what is the person's body temperature in k? round your answer to the nearest whole number.

Pf3cl2 is a nonpolar molecule. based on this information, determine the f-p-f bond angle, the cl-p-cl bond angle, and the f-p-cl bond angle. enter the number of degrees of the f-p-f, cl-p-cl, and f-p-cl bond angles, separated by commas (e. g.

What is the empirical formula of a substance that contains 2.64g of C, 0.444g H and 3.52g of O