Answer the following question given this paragraph: Q: What atmosphere do gills help exchange gas in? Choices: - stratosphere - ecosystem - air - water A:
water
Answer the following question given this paragraph: Salts of Weak Bases and Strong Acids When we neutralize a weak base with a strong acid, the product is a salt containing the conjugate acid of the weak base. This conjugate acid is a weak acid. For example, ammonium chloride, NH4Cl, is a salt formed by the reaction of the weak base ammonia with the strong acid HCl: NH 3(aq) + HCl(aq) NH 4 Cl(aq) A solution of this salt contains ammonium ions and chloride ions. The chloride ion has no effect on the acidity of the solution since HCl is a strong acid. Chloride is a very weak base and will not accept a proton to a measurable extent. However, the ammonium ion, the conjugate acid of ammonia, reacts with water and increases the hydronium ion concentration: NH 4 +(aq) + H 2 O(l) H 3 O +(aq) + NH 3(aq) The equilibrium equation for this reaction is simply the ionization constant. Ka, for the acid NH 4 + :. Q: When we neutralize a weak base with a strong acid, the product is ________ containing the conjugate acid of the weak base. Choices: - an electron - an ion - water - salt A:
salt
Q: Answer the following question given this paragraph: This equation shows that momentum is directly related to both mass and velocity. An object has greater momentum if it has greater mass, greater velocity, or both. For example, a bowling ball has greater momentum than a softball when both are moving at the same velocity because the bowling ball has greater mass. However, a softball moving at a very high velocity say, 100 miles an hour would have greater momentum than a slow-rolling bowling ball. If an object isn't moving at all, it has no momentum. That's because its velocity is zero, and zero times anything is zero. Q: Momentum is directly related to both mass and? Choices: - mass - intensity - speed - velocity A:
A: velocity
Question: Answer the following question given this paragraph: Polluted water can form a frothy green scum on the surface. This "pond scum" is actually a living organism, algae. The algae are plant-like protists. Usually the algae are too small to notice, but sometimes algae grow in excess because of the excess nutrients in polluted water. Q: What organism constitutes frothy green "pond scum"? Choices: - bacteria - sponges - protozoa - algae A:
Answer: algae
*Question*
Answer the following question given this paragraph: The way a mineral cleaves or fractures depends on the crystal structure of the mineral. Q: The way a mineral cleaves or fractures depends on what part of the mineral? Choices: - the fault structure - the core - the crust - the crystal structure A:
**Answer**
the crystal structure
(Question)
Answer the following question given this paragraph: Capillaries are the smallest type of blood vessels. They connect the smallest arteries (arterioles) and veins (venules). Exchange of substances between cells and the blood takes place across the walls of capillaries, which may be only one cell thick. Q: What is the term for the smallest blood vessels? Choices: - muscles - Aortas - arteries - capillaries A:
(Answer)
capillaries