03/31/21

Determine ∆G° for a reaction when ∆G = -152.7 kJ/mol and Q = 0.043 at 298 K. (R = 8.314 J/mol ･ K)
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03/31/21

Calculate how many moles of SrF2 will be produced from 5.5 moles of HF in the following reaction. Sr(OH) 2 + 2 HF 4 SrF2 + 2 H2O

a. 2.75 moles SrF2 0 b. 11 moles SrF2 c. 7.5 moles SrF2 d. 5.5 moles SrF2
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03/30/21

CHEMISTRY LIMITING REACTANT
The following data was collected when a reaction was performed experimentally in the laboratory. Reactants Products Al(NO3)3 NaCl NaNO3 AlCl3 Starting Amount in Reaction 4 moles 9... more
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03/30/21

A gas at 300 K occupies 6.50 L at a pressure of 3.50 atm. What will its pressure be at 250 K if its volume is reduced to 4.80 L?

A gas at 300 K occupies 6.50 L at a pressure of 3.50 atm. What will its pressure be at 250 K if its volume is reduced to 4.80 L?
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03/29/21

chemistry help 21-2
If 200.8 g of carbon dioxide gas is made from the complete combustion of isopropanol (C3H7OH), how many moles of oxygen are used up?
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03/29/21

Assign oxidation states to bromine
Assign oxidation states to bromine in the following compounds: HBr HOBr Br2 BrF3
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03/29/21

Determine the concentration of the acid
The flask contains 25mL of an unknown diprotic acid aqueous solution that reacts in a 1:2 stochiometric ratio with NaOH. Tritrate the solution with NaOH to determine the concentration of the acid.
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03/28/21

Finding Vector Direction in Degrees
Find the direction of the vector <-1, 22> to the nearest degree.
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03/28/21

How do you say in Spanish: they know the answers
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03/28/21

What is a group of atoms that gains or loses electrons called?
A. a polar ionB. a non-polar ionC. a polyatomic ionD. a common ionE. None of the aboveFor this I got; C. a polyatomic ion. Is this correct?
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03/27/21

chem help please
A sample of nitrogen gas at 0.804 atm is compressed to a new volume of 373 mL and now has a pressure of 806 mm Hg. What was the original volume in liters if the temperature remained 344.5oC the... more
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03/25/21

Write the formula for magnesium phosphate and explain it in terms of its charge for both the magnesium and phosphate ions.
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03/24/21

What mass of O2 will react with exactly 6.00 g P to form P2O5 in the following reaction? 4P + 5O2 → 2P2O5
similar to stoichiometry
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03/24/21

What ticket price would maximize revenue?
A baseball team plays in a stadium that holds 64000 spectators. With the ticket price at $10 the average attendence has been 27000. When the price dropped to $8, the average attendence rose to... more
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03/23/21

Find the equation of the tangent line to the curve:
Find the equation of the tangent line to the curve f(x)=2x at the point P(0,1) is:
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03/23/21

Precalc ellipse in standard form
Major axis vertical with length 8; length of minor axis=4; center: (-8,4)
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03/20/21

10.2: Find the equation of the line tangent to the graph of f at the indicated value of x. f(x)=10e^x+2x​; x=0 y= ________
Find the equation of the line tangent to the graph of f at the indicated value of x.f(x)=10e^x+2x​; x=0y= ________
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03/20/21

chemistry help me i am lost in chemistry
Solid aluminum Aland chlorine Cl2 gas react to form solid aluminum chloride AlCl3. Suppose you have 13.0 mol of Al and 2.0 mol of Cl2 in a reactor. Calculate the largest amount of AlCl3 that could... more
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03/19/21

what size square must be cut if the volume of the box is to be 40 cubic​ inches?
A box with an open top is formed by cutting squares out of the corners of a rectangular piece of cardboard and then folding up the sides. If x represents the length of the side of the square cut... more
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03/19/21

Determine the cubic function that is obtained from the parent function
Determine the cubic function that is obtained from the parent function y=x3 under a vertical stretch by a factor of 4​, a reflection across the​ x-axis, a vertical translation 2 units down​, and a... more
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03/19/21

Use the following reaction: 2KClO3 -> 2KCl + 3O2
If 5.00 g of KClO3 is decomposed, how many grams of O2 is produced?
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03/19/21

HELP PLSSSSSSSSSSS
How many moles of nitrogen gas are needed to produce 620.69 g of NH 3 , assuming an excess of hydrogen? N 2 +3 H 2 2 NH 3
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03/01/21

Are the mass percentages of 25.94% nitrogen (N) and 74.06% oxygen (O) consistent with the formula N2O5? (MN = 14.01 g mol-1; MO = 16.00 g mol-1). Explain your reasoning fully.
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02/25/21

Find the point on the graph of y = x^2 where the curve has slope m = -18.
The point is ________ (Type an ordered​ pair).
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02/23/21

circular functions
Convert 5 radians to degrees.
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