Jennifer is learning the parts of the cell and knows that there must be a structure responsible for maintaining the homeostasis of the cell. This structure is which of the following?

A. cell membrane

B. Nucleus

C. Chloroplast

7. At a pressure of 3800 torr, a sample of gas occupies 40 liters. What volume will the same sample occupy at 1.0 atmosphere?

The solvent is the part of the solution that

What occurs when an atom loses an electron? (1) The atom's radius decreases and the atom becomes a negative ion. (2) The atom's radius decreases and the atom becomes a positive ion. (3) The atom's radius increases and the atom becomes a negative ion.

Question 3 A galvanic cell at a temperature of 25.0°C is powered by the following redox reaction: →+2VO+2aq+4H+aqFes+2VO+2aq+2H2OlFe+2aq Suppose the cell is prepared with 2.22 M VO+2 and 3.55 M H + in one half-cell and 5.56 M VO+2 and 6.

2. What charge does an electron have? a. Positive b. Negative c. Neutral d. No charge

1. A sample of sodium chloride (NaCl) has a mass of 28.36g. Calculate the number of moles of NaCl in the sample. Show your work. 2. Calculate the number of moles of each element (number of moles of Na and number of moles of Cl) in NaCl in the sample.

How can we predict how the moon will change appearance from day to day?

When is the Sun directly overhead in the continental United States? A. always B. in the summer C. never D. at noon

Predict whether or not a precipitate forms upon mixing 175.0 ml of a 0.0055 mkcl solution with 145.0 ml of a 0.0015 m agno3 solution. identify the precipitate, if any.

The nucleus of one boron atom has 5 protons and 4 neutrons wjat is the total number of electrons in a boron atom