The speed of light is used to determine the length of a light-year. About how far does light travel in one second? A. 30 km B. 3,000 km C. 30,000 km D. 300,000 km

Which of these observations is not an example of a physical property of matter? A. The density of sea water is measured to be 1.027 g/cm3. B. Gold melts at 1064 ºC. C. There are usually at least three different minerals in a piece of granite. D.

Which quantity is larger 5mL or 5 dL

How you would test the best method for separating the precipitate from the liquid in curdled milk?

The ph of a solution for which [OH] = 1.0 x 10^-4 is? A 10 B 14 C 11 D 9 E 7

Which of the following groups in the periodic table contain elements so reactive that they are never found in the free state? (1) 1 and 2 (3) 2 and 15 (2) 1 and 11 (4) 11 and 15

Never trust Wikipedia .

Which is the molar mass of BF3?

Mg3 (Si2O5) 2 (OH) 2 There are. 0893 moles of magnesium how many moles of silicon are there in the sample?

The volume of a gas is reduced from 4 L to 0.5 L while the temperature is held constant. How does the gas pressure change? It increases by a factor of two. It increases by a factor of eight. It decreases by a factor of eight.

Write the complete balanced equation for the decomposition of sodium chloride (NaCl)