If 82.5 g of potassium sulfide react, how many moles of K2S react

Calculate the amount of hcn that gives the lethal dose in a small laboratory room measuring 14 * 15 * 8.0ft. the density of air at 26∘c is 0.00118g/cm3.

A motorcycle is moving at 18 m/s when its brakes are applied, bringing the cycle to rest in 4.7 s. To the nearest meter, how far does the motorcycle travel while coming to a stop?

The water tower shown below has a spherical reservoir (outlined in black) with measured diameter of 25.0 m. The reservoir is filled to 80.0% of its full capacity.

If the primary coil of a transformer has 200 turns and is supplied with 120 v ac power, how many turns must the secondary coil have to provide 12 v ac power?

Carbohydrates are one of how many major components of food

Acceleration is a scalar quantity true or false

Find a numerical value for rhoearth, the average density of the earth in kilograms per cubic meter. Use 6378km for the radius of the earth, G=6.67*10-11m3 / (kg⋅s2), and a value of g at the surface of 9.80m/s2.

The driver of a car traveling at 32 m/s applies the brakes and undergoes a constant deceleration of 2.25 m/s^2.

The ability of an object to vibrate by absorbing energy at its natural frequency is called?

A hurricane in the Gulf of Mexico to 15 hours to travel 360 kilometers. What is the average speed of this hurricane in kilometers per hour?