A lemon with mass 0.3 kg falls out of a tree from a height of 1.8 how much mechanical energy does the lemon have just before it hits the ground? (assume there is no air resistance)

The ph of a popular soft drink is 3.4; what is its hydronium ion concentration?

A lion is a heterotroph, what a type of organism is it

Jade creates a Punnett square to show the cross between a parent with freckles and a parent without freckles. The completed Punnett square shows the possible genotypes and phenotypes of the offspring.

Predict whether each of the following substances would be more soluble in water (polar solvent) or in a hydrocarbon such as heptane (C7H16, nonpolar solvent): (a) vegetable oil (nonpolar) (b) isopropyl alcohol (polar) (c) potassium bromide (ionic)

Which of these is a property of a substance that is composed of atoms that are held together by ionic bonds

One side of a cube is 5 cm long. What is the cube's volume? 5 15 25 125

What do we call the experimental apparatus that William crooks used in his experiments and what did he discover

At equilibrium, a. the forward reaction rate is lower than the reverse reaction rate. b. the forward reaction rate is higher than the reverse reaction rate. c. the forward reaction rate is equal to the reverse reaction rate. d.

Given the balanced equation representing a reaction: 4Al (s) + 3O2 (g) - - >2Al2O3 (s) Which type of chemical reaction is represented by this equation? (1) double replacement (2) single replacement (3) substitution (4) synthesis

A helium balloon has a volume of 735 mL when it is at ground level. The balloon is transported to an elevation of 5km, where the pressure is only 0.8atm. At this altitude the gas occupies a volume of 1286mL.