How did Lavoisier distinguish between compounds and elements?

Raising 100 grams of water from 40 to 60 °C (the specific heat capacity of water is 1 cal g ) requires the addition of A) 120 calories. B) 1500 calories. C) 2000 calories. D) 2400 calories.

Name two instruments that are based on the law of flotation

Falling overboard is a major risk on small boats. how can you reduce this risk?

I traveled 6.00 km to school in 0.250 hours. What was my average speed

A solution is made using 80.0 g of toluene (MM 92.13 g/mol) and 80.0 g of benzene (MM 78.11 g/mol) What is the molality of the toluene in the solution? A. 12.8 m B. 10.9 m C. 6.38 m D. 5.43 m

An object with a mass of 10.9 kg experiences a force of 18.53 N. What is the acceleration of the object? A. 2.2 m/s2 B. 1.7 m/s2 C. 16.83 m/s2 D. 1.3 m/s2

A proton, starting from rest, accelerates through a potential difference of 1.0 kV and then moves into a magnetic field of 0.040 T at a right angle to the field. What is the radius of the proton's resulting orbit

Which of the following terms are needed to completely describe speed? Check all that apply. A. Units B. Direction C. Number D. Mass

Drivers are able to see objects ahead of them because light travels through windshields.

How are trade winds affected by the coriolis effect