A 250-gram solution of alcohol contains 180 mL of water. What is the mass percent of alcohol? (Remember water's density.)

Suppose a salt and a glucose solution are separated by a membrane that is permeable to water but not to the solutes. the nacl solution has a concentration of 1.95 g per 250 ml of water (molecular weight = 58.5).

The functional group for an organic acid is: - CHO - OCO - CH - COOH

1. In general, the nucleus of a small atom is stable. Therefore, over very short distances, such as those in a small nucleus, a. the strong nuclear force is much greater than the electric force. b.

If the reaction produced 15.5 g CO2, how many grams of heptane were burned?

When the equation Al (OH) ₃ + H₂SO₄ - --> Al₂ (SO₄) ₃ + H₂O is balanced, the sum of the balancing coefficients is A. 5 B. 7 C. 11 D. 12

Determine the oxidation number of oxygen in the carbonate ion found in malachite

Is boron and chlorine covalent or ionic

Explain why ionic crystals melt at much higher temperatures than typical covalent molecular crystals

Why it is important that mRNA is transcribed correctly from the strand of DNA

A substance is on its fifth half-life. Which approximates the percentages of radioactive and stable isotopes, respectively? 96.9%; 3.1% 3.1%; 96.9% 12.5%; 87.5% 87.5%; 12.5% Need an answer fast