7. Citric acid contains 37.5 g C, 58.3 g 0, and 4.2 g H and the MW = 192, what is

the molecular formula?

True or false research is done only after a hypothesis is written

For the following systems (as underlined), determine which of the following conditions apply: open, closed, adiabatic, isolated, isothermal, isobaric, isochoric, or steady-state. a.

If I a reaction occurs when a piece of metal is placed in a solution what can you conclude about the solution

Which of the following are forms of asexual reproduction? Select three options. A. zygote formation B. binary fission C. fertilization D. fragmentation E. sporulation

Ba2 + (aq) + SO42 - (aq) →BaSO4 (s) A student obtains a 10.0g sample of a white powder labeled as BaCl2. After completely dissolving the powder in 50.

Why do you think plant fossils are less common than body fossils?

Why are valence electrons important?

A woman carriers her 100-newton child for a distance of 50 meters to the child's bedroom. How much work does the woman do?

Which statement best describes the compressibility of a gas? A Increasing the temperature of a gas decreases the pressure. B Increasing the temperature of a gas increases the pressure. C Increasing the pressure on a gas decreases the volume.

How many grams are in 3.0 moles of KCI (potassium chloride) ?