Cards in this guide (31)
What is an intensive property
In chemistry, an intensive property is a property that depends
on the type of matter in a sample.
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
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
Which process would be most appropriate to separate a mixture
How many feet in one marla
1 marla= 272.25 square feet
Is odor an extensive or intensive property
Molten iron is extremely hot averaging about 1500C The specific heat of iron is 0.46 JgC How much heat is released to the atmosphere when 1kg molten iron cools to room temperature 25C
0.46 * 1475 = 678.5 Kjoules (The specific heat is given in terms
of joules/ gramme/degC, whilst the question refers to 1kg ie 1000g
A cork has a density of 0.240g cm3 what volume would 10.0 grams of cork have
density = mass/volume
The mean density of cork is 0,24 g/cm3.
volume= 10 g/0,24 = 41,66 cm3
Is electric conductivity extensive or intensive
why electrical conductivity is an intensive property of matter
Calcium chloride is often used to de-ice roads in the winter What volume would 15.7 g calcium chloride occupy
Carl's teacher has asked him to separate a mixture of sand and iron filings Which of these methods would correctly separate the mixture
the correct answer would be -( magnetic attraction of one part )
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 Î”t, where q is amt of heat gained or lost, C is specific heat capacity, and Î”t is change in temperature.
q = 2000J
m = 4g
Î”t = 5oC
C = q/mÎ”t
C = 2000J/4g5oC = 2000J/20goC = 100J/goC
Which of these is a description of a chemical property
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
The last thing you should do before leaving the laboratory is
Classify texture as intensive or extensive
Texture is classified as intensive.
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
Classify copper tubing as homogenous or heterogenous
Copper tubing is homogenous.
Classify this property as homogenous or heterogenous Click on the correct answer
Classify this property as intensive or extensive height
Classify this property as intensive or extensive width
Express this amount in dozens Use decimal form 7.5 cupcakes
An ancient copper coin was found to absorb 545.8 J of heat when the temperature increases 31.4C The specific heat of copper is 0.387 JgC What is the mass of the copper coin
Thuy's mother asked her to mix some baby formula by adding two scoops of the powdered formula mix to one liter of water then stirring well When she has correctly made the baby formula what will Thu
How many significant digits are in the number 0007080
A 050g ball of aluminum foil absorbs 1.42j heat when it is heated 31.6c what is the specific heat of aluminum foil
Which of the following is not a description of a physical property height density flammability melting point
While doing a demonstration for his class Mr Mathras dropped a peasized piece of silver solid into a beaker of distilled water The solid began fizzing then swirling before bursting into a yellow flame
How many hours does a psycriatrist work ina day and how many days a week
A psychiatrist works an average of 8 hours per day, 5 days per
What Express this amount in dozens. (Use decimal form.) 75 pies
What classify melting point property as intensive or extensive
Melting point is an intensive propery because doesn't depend on the mass of sample.