If the atomic number of an element is 7 and its mass number is 18, how many neutrons are in the atom's nucleus?

The summer camps had a field trip from the campus to Fragrance Hill. They traveled at an average speed of 65 km/h in the first 2 hours. After that, traveled at another average speed of 78 km/h.

In the uncatalyzed reaction N2O4 (g) ⇌ 2 NO2 (g) the pressure of the gases at equilibrium are PN2O4 = 0.377 atm and PNO2 = 1.56 ATM AT 100ºc. What would happen to these pressures if a catalyst were added to the mixture?

199.5 grams unrefined dark crystalline sugar to cups

Which best explains how the Coriolis effect is related to wind direction? A. Air moves in a straight line from north to south. B. Wind is cooler at the poles and warmer at the equator. C. Wind blows down from mountaintops and up from canyons. D.

The equation represents the decomposition of a generic diatomic element in its standard state. 12X2 (g) ⟶X (g) Assume that the standard molar Gibbs energy of formation of X (g) is 5.61 kJ·mol-1 at 2000. K and - 52.80 kJ·mol-1 at 3000. K.

How many grams of KCl are produced when 60 grams of K are reacted?

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How do compounds affect an atom's stability

You need to make 10 mL of 2 mg/ml solution of protein and you have 25 mg/mL solution. How much protein solution and water do you need to mix in order to make the required solution?

The definition of volume is? a) width*height b) the space occupied by mass c) the space occupied by a liquid d) the mass of liquid required to fill a container