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Chemistry

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Larissa Thompson

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Cards in this guide (12)
How many hours does an Electrician work

Most electricians work for a standard 35-40 hours in a week. However, once established, being an electrician is quite lucrative (it certainly is in Australia) and many have their own assistants and / or employees and can afford to spend a little more time off.

On a trip to Italy Cheyne rented a car to tour the country As he turned onto the highway he noticed that the speed limit was 95 kmh How fast can Cheyne drive in mph

Cheyne can drive 59 mph.

Calcium chloride is often used to de-ice roads in the winter What volume would 15.7 g calcium chloride occupy

6.28cm3

What is the specific heat of an unknown substance if 2000 J of energy are required to raise the temperature of 4 grams of the substance 5 degrees Celsius

q = m x C x Δt, where q is amt of heat gained or lost, C is specific heat capacity, and Δt is change in temperature.

Known:

q = 2000J

m = 4g

Δt = 5oC

Equation:

C = q/mΔt

Solution:

C = 2000J/4g5oC = 2000J/20goC = 100J/goC

George intentionally threw a snowball directly at Chris The fact that the snowball will continue in the direction of Chris after leaving George's hand is an example of the snowball's

inertia

Stella described her chemistry notebook as being a green rectangle with curved edges It measured 30.0 cm x 22.1 cm What kind of properties did Stella describe

physical properties (:

Classify this property as homogenous or heterogenous Click on the correct answer

homogeneous

Classify this property as intensive or extensive width

Width is extensive.

Express this amount in dozens Use decimal form 7.5 cupcakes

6.25 (:

A 050g ball of aluminum foil absorbs 1.42j heat when it is heated 31.6c what is the specific heat of aluminum foil

0.90 J/g°c

Which of these is homogenous lead fishing sinker sedimentary rock trail mix or iced tea with lemon

lead fishing sinker

How many significant zeros are in 85000

None of the zeros in that number are significant.

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