Practice Test.

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Presentation transcript:

Practice Test

Write the number of significant figures in the space provided (0 Write the number of significant figures in the space provided (0.5 pts each). (a) 5234 cm _____ (b) 0.0000240 m _____ (c) 2342000 kg _____ (d) 234200. s _____

Calculate the following (1 points each) (a) 234 kg + 4.00 kg (b) 12.2 kg - 0.2 kg (c) (45.0 m)(3.250 m) (d) 14.0 kg ÷ 0.020 m3

Calculate the perimeter of the Calculate the perimeter of the (6) Calculate the surface area of a sphere a rectangle having sides of length having a radius of 5.00 cm. 4.00 cm and 6.0 cm. (hint: SA = 4πr2) (3 points)

Complete the following conversions (2 points each) 2.00 cm = ? Mm (b) 15.0 m/s = ? km/hr

) A person goes to a farm animal trade show wishing to trade 3 horses for dogs. Given the information below, how many dogs will the person receive for their 3 horses? (6 points) 9 dogs = 4 sheep sheep = 2 pigs 4 pigs = 3 cows 2 cows = 1 horse

Mars is located 2.29 x 1011 m from the sun and takes 687 Earth days to make one orbit around the sun. Calculate the speed of Mars in km/hr.

How much energy is given off by 500. g of water as it cools from 30 How much energy is given off by 500. g of water as it cools from 30.0 ºC to 10.0 ºC? c for water equals 4180 J/KgºC

40. 0 grams of ice at -10. 0 °C is warmed until it become water at 20 40.0 grams of ice at -10.0 °C is warmed until it become water at 20.0 °C. Calculate the energy used in this process. Hint: c for ice is 2050 J/Kg°C, heat of fusion is 333000 J/Kg, and c for water is 4180 J/Kg°C. (6 points)

1000. g of lead (c = 130. J/Kg°C) is heated until it reaches a temperature of 150. °C. The lead is then placed into 1.50 L of 20.0 °C water (c = 4180 J/g°C). Calculate the final temperature of the lead/water combination. (6 points)