A 80.0 g silver object and a 80.0 gold are both added
to 64.4 mL of...
A 80.0 g silver object and a 80.0 gold are both added
to 64.4 mL of water contained in a graduated
cylinder. what is the new water level, in
millimeters, in the cylinder
Suppose silver (S) and gold (G) are substitutes for each other
because both serve as hedges against inflation. Suppose also that
the supplies of both are fixed in the short run (QS= 250 and
QG=150) and that the demands for silver and gold are given by the
following equations:
PS=600-QS+0.5PG
PG=1050-QG+0.5PS
What are the equilibrium prices of the silver and gold?
What if a new discovery of gold doubles the quantity supplied to
300. How will this discovery affect the...
70.0 mL base with 2.00 M molarity is added to 80.0 mL Oxalic
acid with 1.80 M molarity. The initial temperature is 20.0 °C and
specific heat capacity is assumed to be the same as water (4.184 J/
g °C). Once the reaction reached thermal equilibrium, the
temperature became 32.72°C. Find the enthalpy of neutralization for
base.
1) Thirty grams of silicon at 80.0°C
is added to 70.0 mL of water at 20.0°C. Calculate the final
temperature after the two substances are mixed together. The
specific heat of water is 4.184 J/g°C and the specific heat of
silicon is 0.7121 J/g°C.
2) A cube of brass, 2 cm on a side, is
heated until the temperature of the brass is 75oC. The
cube is quickly added to 100 mL of water at 23oC. What
is the final...
Silver sulfate solution is added to 25.00 mL of a 0.500 M potassium
chloride solution until no more precipitate forms. What mass of
silver chloride will be formed? What concentration of potassium
will remain in solution after the reaction is complete if 45 mL of
silver sulfate solution were added to the potassium chloride
solution?
Fast $, Inc produces silver and gold pendants. The data are as
follows:
Silver
Gold
Price
$30
$125
Material
8
35
Labor
5
73
Contribution Margin
Labor Hours Required
$0 .75
$1.00
Demand
100
75
Fixed Costs = $10,000; Labor hours
available = 100
Are there enough labor hours to
satisfy demand for both types?_____
Determine the contribution margin per labor hours for each
How many silver pendants and how many gold pendants would
maximize profits?...
Suppose that 0.86 g of water condenses on a 80.0 −g
block of iron that is initially at 22 ∘C.
If the heat released during condensation goes only to warming
the iron block, what is the final temperature (in ∘C) of the iron
block? (Assume a constant enthalpy of vaporization for water of
44.0 kJ/mol.) Answer in Torr.
A consumer has 10 pounds of gold and 20 pounds of silver. The
price of gold ?) = $4,000 a pound while the price of silver ?* =
$1,000 a pound. Gold and silver are the only two goods that can be
consumed.
Write down the budget constraint of this consumer and draw it on
a graph.
Suppose that the price of silver increases to $2,000 a pound.
Draw the new budget
constraint. Has the purchasing power of our consumer...
A sample of 9.20 g of solid calcium hydroxide is added to 37.5
mL of 0.440 M aqueous hydrochloric acid. Enter the balanced
chemical equation for the reaction. Physical states are optional
and not graded. What is the limiting reactant? How many grams of
salt are formed after the reaction is complete? How many grams of
the excess reactant remain after the reaction is complete?
A sample of 3.53 g of K3PO4 is added to 75.3 mL of 0. 545 M
AgNO3, resulting in the formation of 4.86 g of a Ag3PO4
precipitate. Calculate the percentage yield of the reaction.
3Ag+(aq)
+ PO4 (aq) →
Ag3PO4(s)
131 g of metal at 100.0 oC is added to 60.0 mL of
water at 26.0 oC. The equilibrium temperature reaches
39.9 oC. The specific heat of water is 4.184
J/g.K. Assuming the heat capacity of the calorimeter is
negligible, calculate the specific heat of the metal.