Ethanol ia a common laboratory solvent and has a density of 0.789 g/mL. What is the mass, in grams, of 123 mL of ethanol?

What assumptions are we making when we infer the mass of a galaxy cluster from observations of the spectra of its constituent galaxies?

In the lab, felipe has two solutions that contain alcohol and is mixing them with each other. he uses twice as much solution a as solution b. solution a is 12% alcohol and solution b is 15% alcohol.

The shapes shown at left are placed in a bag. Laryssa pulls one out of the bag. What is the probability that Laryssa selects a triangle?

Write the net ionic equation for KNO2 + HCl - > KCl + HNO2

Which of the following is true about population distribution? A) Regular distribution is the most common type of population distribution. B) Random distribution occurs due to interactions with other individuals.

Which property would cesium most likely have? It is hard. It is ductile. It is a gas. It has low reactivity.

What is dexamethazone?

Is S + O2-> 2H2O + 483.6 KJ exothermic or endothermic

An aspirin tablet contains 81.0 mg of aspirin, which has the molecular formula, c9h8o4.

If you have 6 moles of CH4 how many moles of H2O can be produced