Danny sails a boat downstream. The wind pushes the boat along at 21 km/hr. The current runs downstream at 15 km/hr. What is the actual velocity of the boat?

6.0 km/hr, downstream

1.4 km/hr, downstream

310 km/hr, downstream

36 km/hr, downstream

A compound that has a sea of delocalized electrons has what type of bonding? A. Covalent bonding B. Electrostatic bonding C. Metallic bonding D. Electrofluid bonding

Ammonium phosphate is an important ingredient in many solid fertilizers. it can be made by reacting aqueous phosphoric acid with liquid ammonia. calculate the moles of ammonium phosphate produced by the reaction of 0.085 mol of ammonia.

Why is there no overall charge on an aluminium atom?

How can you make a solution saturated

What is classified as a pure substance. A: Compound B: Colloid C:Solution D: Homogeneous Mixture

Why does the glass of water weigh less after the pill has dissolved? Why does the glass of water weigh less after the pill has dissolved? Nitrogen dioxide gas will be generated and released as the anti-acid pill dissolves.

Assume that the potential energy of the products in a chemical reaction is 60 kilojoules. this reaction would be exothermic if the potential energy of the reactants were

Which type of ions are formed when an acid is dissolved in water?

According to the collision theory, when can a chemical reaction occur? When enough activation energy is added to correct the orientation of the particle collisions When reactants collide with enough energy to intersect their valence shells and form

Why is ice less dense than water? A. When water freezes, it forms a crystal structure with less volume than liquid water. B. Ice crystallizes with an open structure, and the gaps that form between the water molecules in ice increase its volume. C.