The agricultural practice of spraying insecticides leaves behind which pollutant in the soil? A. Chemical poison B. Excess nitrogen C. Excess salt D. Acidic compounds

What will always be different in the isotopes of atoms?/?

A student added some sugar to a glass of water, but it did not dissolve quickly. What could the student do to increase the rate at which the sugar dissolves in the water?

Where is DNA located in cell

What are the variables of Boyle's law? pressure and number of molecules of gas volume and temperature pressure and temperature volume and number of molecules of gas pressure and volume

Predict what would happen to life on earth if the Earth suddenly stopped rotating on its tilted axis?

What elements react the most? Like have the most reactivity.

A neutral atom has an atomic number of 20 and a mass number of 42. How many electrons does the atom have?

A rock is placed into water and the volume of water increase 15ml. what is the density of the rock if it had a mass of 24.3 grams.

Suppose a student did not fully redissolve the Al (OH) 3 that initially formed upon the addition of H2SO4. Predict and explain how this would impact the apparent percent yield this student determines.

Essential amino acids are those that our bodies cannot synthesize. question 7 options: true false