Chapter 1 homework- regular
The U.S. quarter has a mass of 5.67 g and is approximately 1.55 mm thick. How much money would this stack contain?
$ 2.83x 10^4
Fabiola, who lives in Mexico City, fills her car with gas, paying 357 pesos for 40.0L. What is her fuel cost in dollars per gallon, if one peso=0.0759 dollars
$2.56/gal
if a woman who has a mass of 115lb, what is her mass in grams?
(115lb)x(453.6g/1lb)= 5.22x 10^4g
The length, width and height of a small box are 15.5, 27.3 and 5.4 cm, respectively. Calculate the volume o the box using the correct number of significant figures in your answer.
(15.5)(27.3)(5.4)= 2285.01 cm^3 2.3x10^3 cm^3
Calculate the volume of 65.0 g of liquid methanol if its density if 0.791 m/mL
(65.0g)/0.791g/mL= 82.2 mL
A certain liquid has a density of 2.67 g/cm^3. 1340 g of this liquid would occupy a volume of _____ L.
0.502
The U.S. quarter has a mass of 5.67 g and is approximately 1.55 mm thick. How many quarters would have to be stacked to reach 575 ft, the height of the Washington Monument
1.13x10^5 quarters
The average speed of a nitrogen molecule in air at 25 degrees C is 515 m/s. Convert this speed to miles per hour
1.15x10^3mi/hr
A car travels 28 mi per gallon of gasoline. How many kilometers per liter will it go?
12km/L
what is the correct answer reported to the proper number of significant figures? 12.75 x 1.3621= ______
17.37
platinum Pt, is one of the rarest of the metals. Worldwide annual production is only about 130 tons. Platinum has a density of 21.4 g/cm^3, if thieves were to steal platinum from a bank using a small truck with a maximum payload capacity of 900lb, how many 1L bars of the metal could they take?
19
A student needs 15.0 g of ethanol for an experiment. If the density of ethanol is 0.789 g/mL, how many milliliters of ethanol are needed?
19.0 mL
Silicon for computer chips is grown in large cylinders called "boules" that are 300 mm in diameter and 2 m in length A diamond blade slices wafers off a silicon boule cylinder that is 2 meters long. The cut wafers are 0.75 millimeters thick and 300 millimeters in diameter. The density of silicon is 2.33 g/cm3. Silicon wafers for making integrated circuits are sliced from a 2.0 m boule and are typically 0.75 mm thick and 300 mm in diameter. How many wafers can be cut from a singly boule
2700 wafers
What is the mass, in grams of 25.0 mL of mercury (density = 13.6 g/mL)
340g
A their plans to steal a gold there with a radius of 28.9 cm from a museum. If the gold has a density of 19.3g/cm^3, what is the mass of the sphere in pounds? (volume of a sphere is V=(4/3)pi r^3
4.30x10^3 lb
The US National Debt Clock showed the outstanding public debt to be $16,213,166,914,811 on October 28 2012. How many stacks like the one described would be necessary to pay this debt? The U.S. quarter has a mass of 5.67 g and is approximately 1.55 mm thick. one stack would contain $2.83x 10^4
5.74x 10^8 stacks
calculate the density of a 354.5g sample of copper if it has a volume of 41.8 cm^3.
8.96 g/cm^3
At a particular instant in time, the Earth is judged to be 92,955,000 miles from the Sun. What is the distance in kilometers to four significant figures?
804.7km
it takes about 10.5 s for a sprinter to run 100 m. Calculate her average speed in meters per second and express the result to the correct number of significant figures
9.52m/s
acceleration due to gravity of a free-falling object is 9.8 m/s^2. Express this is millimeters/ millisecond^2.
9.8x10^-3
nomenclature calcium hydroxide
Ca(OH)2
nomenclature Cadmiium ditchromate
CdCr2O7
nomenclature Iron (III) nitrate
CdCr2O7
nomenclature cesium carbonate
Cs2CO3
Calculate the density of mercury if 1.00x 10^2 g occupies a volume of 7.36 cm^3
D=m/v (1.00x10^2g)/7.36 cm^3
A weather forecaster predicts the temperature will reach 31 degrees Celsius. What is this temperature in F
F= 9/5(31)+32= 56+32=88 F
Ethelene glycol, the major ingredient in antifreeze, freezes at -11.5 C. What is the freezing point in F
F= 9/5(C)+32 11.3F
AuF3
Gold (III) fluoride
Phosphorus acid
H3PO3
periodic acid
HIO4
Nitric Acid
HNO3
Fe(OH)3
Iron (III) hydroxide
A weather forecaster predicts the temperature will reach 31 degrees Celsius. What is this temperature in K
K= 31+ 273= 304 K
Ethelene glycol, the major ingredient in antifreeze, freezes at -11.5 C. What is the freezing point in K
K= C+273.15 261.7K
Silicon for computer chips is grown in large cylinders called "boules" that are 300 mm in diameter and 2 m in length, as shown.A diamond blade slices wafers off a silicon boule cylinder that is 2 meters long. The cut wafers are 0.75 millimeters thick and 300 millimeters in diameter. The density of silicon is 2.33 g/cm3. Silicon wafers for making integrated circuits are sliced from a 2.0 m boule and are typically 0.75 mm thick and 300 mm in diameter. What is the mass of a silicon wafer? (The volume of a cylinder is given by pi r h
M= 120 g
dinitrogen pentoxide
N2O5
Ammonium Fluoride
NH4F
nomenclature sodium phosphate
Na3PO4
nomenclature Nickel (II) chlorite
Ni(CLO2)2
Lead (IV) sulfate
Pb(SO4)2
silicon tetrachloride
SiCl4
SnCl4
Tin (IV) Chloride
What is the mass in grams of a cube of gold if the length of the cube is 2.00 cm
V=m/D (2.00cm)^3= (2.00)^3 cm^3 = 8.00 cm^3 m= volume x density (8.00 cm^3)(19.2g/cm^3)= 155g
(NH4)2CO3
ammonium carbonate
CuSO4
copper (II) sulfate
Cl2O7
dichlorine heptoxide
A combination of salt, sand, and water is an example of a _____ solid, homogenus mixture, heterogenus mixture, compound, pure substance
heterogenus mixture
HI
hydroiodic acid
Li3N
lithium nitride
The U.S. quarter has a mass of 5.67 g and is approximately 1.55 mm thick. How much would this stack weigh
m= 6.41x 10^5 g
which of the following would be liquid at 525 K bismuth platinum selenium calcium copper
selenium, Se
NaClO3
sodium chlorate
H2SO3
sulfurous acid
Sn3(PO4)4
tin (IV) phosphate
