Which is true about the total number of reactants and the total number of products in this reaction? c5h12 (l) + 8o2 (g) → 5co2 (g) + 6h2o (g) ?

Cole is working with radioactive particles and has set up a shield made of aluminum for protection. Which of the following will he be protected from? A.) Only alpha particles and beta particles B.) Only alpha particles C.

The volume of water in a beaker was 315 mL. After 7 days, the volume of the water was 300 mL. Kayla says that a chemical change occurred, but Maria says it was a physical change. Who is correct? A. Maria is right.

Why is each year's vaccine different?

How do frogs regulate the pressure inside their head while swimming?

How many grams of magnesium metal will react completely with 5.2 liters of 4.0 M HCl? Mg (s) + 2 HCl (aq) - - > MgCl2 (aq) + H2 (g)

A flask is charged with 3.00 atm of dinitrogen tetroxide gas and 2.00 atm of nitrogen dioxide gas at 25ºC and allowed to reach equilibrium. N2O4 (g) - ->2 NO2 (g) Kp = 0.

Which of the following represents gamma emission? O A. 164Gd 188TB + ge O B. prc = $TC+7 O C. 1962 1945m + 2 He O D. 199 Eu + 4e - 154 Sm SUBI

Which is more metallic a) Silicon b) Aluminum

Round the following number to three significant figures: 156.5021 L

Select two options from the following list that qualify as types of pure substances. a substance an atom an element a particle matter a compound