Is a pencil breacking a physical change?

The nucleus and cytoplasm divide equally during the type of asexual reproduction known as ...

a certain quantity of argon gas is under 16 mmhg pressure at 16c in a 12 L vessal. How many moles of argon Are present?

What is the equilibrium membrane potential due to na ions if the extracellular concentration of na ions is 142 mm and the intracellular concentration of na ions is 27 mm at 20°c?

Is mass being increased or reduced?

Nevermind confirmed mistake in that

When 1 g of sodium chloride (NaCl) is placed in 100 g of water, a solution results. Once the solution is prepared, water is now considered what part of the solution?

1. How is pressure affected as depth increases? 2. As the sun heats the surface of the oceans, two layers of water result. What separates the layers? 3. How is temperature affected when? (a) the depth increases (b) the latitude increases 4.

Are nails in a jar with water a chemical change

What is the molarity of a solution composed of 4.73 g of potassium iodide (KI) dissolved in enough water to make 0.169 L of solution? Answer in units of M.

Suppose you were given a substance and asked to determine whether or not it was a plasma. Write the characteristics you would look for to identify the substance.