02/12/21

Synchronous communications satellites are placed in a circular orbit that is 3.59 107 m above the surface of the earth. What is the magnitude of the acceleration due to gravity at this distance?
Can someone explain this exercise to me? Thank you
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02/12/21

How many moles of NO can be produced from 0.680 g of NH 3  according to the following reaction?  4 NH 3  + 5 O 2  → 4 NO + 6 H 2 O
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02/12/21

What is the rate of change for the penguin population on the island at time t=0? (AP Calculus AB)
The penguin population on an island is modeled by a differentiable function P of time t, where P(t) is the number of penguins and t is measured in years for 0≤t≤40. There are 100,000 penguins on... more
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02/12/21

In the reaction, 72.2 g C7H6O3 , reacts with excess C4H6O3 , producing 41.2 g of aspirin, C9H8O4 . C7H6O3(s)+C4H6O3(l)⟶C9H8O4(s)+CH3CO2H(l) Calculate the percent yield of this reaction.
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02/11/21

A bucket of water of mass 30 kg is pulled at constant velocity up to a platform 35 m above the ground. This takes 14 minutes, ...
A bucket of water of mass 30 kg is pulled at constant velocity up to a platform 35 m above the ground. This takes 14 minutes, during which time 2 kg of water drips out at a steady rate through a... more
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02/09/21

Solid aluminum hydroxide decomposes to produce solid aluminum oxide and water.
how do i write this into a balanced chemical equation
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02/09/21

Calculus 1 Using Definition of derivatives

Assume that g(y) has a derivative at y = 3.5 with g′(−3.5) = −3. Using the definition of the derivative, explain why the function f (y) = g(y) − 10 has a derivative at y = 3.5 with f′(3.5)=−3.... more
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02/07/21

Solve for the equation using y' as the slope and the given point (2, 4).
Solve for the equation using y' as the slope and the given point (2, 4).y - y1 = m( x - x1 )Y - ? = ? ( x - 2 )y - ? = ? x - 16Therefore, the equation of the line tangent to the graph is ?
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02/07/21

What is the revenue?

Dorothy Wagner is currently selling 30 "I ♥ Calculus" T-shirts per day, but sales are dropping at a rate of 5 per day. She is currently charging $7 per T-shirt, but to compensate for dwindling... more
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02/07/21

What is the rate for the second order reaction A → Products when [A] = 0.661 M? (k = 0.761 M⁻¹s⁻¹)
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02/07/21

General Chemistry
What is the final sodium ion concentration when 35.0 ml of 0.150 M NaCl is mixed with 75.0 of 0.050 M Na2SO4 and 20.0 ml of 0.100 M KCI?
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02/07/21

General Chemistry
what is the molarity of a solution made by dissolving 12.5 grams of potassium chromate in enough water to form 225 ml of solution?Then give the molarity for the cation.Please include steps
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02/06/21

[CALCULUS RELATED RATES] A supplier produces n thousand boxes of orange daily when it is sold at p dollars per box. Suppose the relationship between n and p is (continuation in description)
A supplier produces n thousand boxes of orange daily when it is sold at p dollars per box. Suppose the relationship between n and p is; pn-3p-100n-100=0If the daily supply is decreasing by 250... more
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02/06/21

Hess’s Law: One Reaction
The standard enthalpy change for the following reaction is 2.11×103 kJ at 298 K. UF6(g)  U(s) + 3 F2(g)    ΔH° = 2.11×103 kJ What is the standard enthalpy change for this reaction at 298... more
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02/06/21

Hess’s Law: One Reaction
The standard enthalpy change for the following reaction is 832 kJ at 298 K. 2 Na2O(s)  4 Na(s) + O2(g)    ΔH° = 832 kJ What is the standard enthalpy change for this reaction at 298 K? 2 Na(s) + 1/2... more
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02/06/21

Ideal Gas Law Chemistry
A gas sample of 5 moles, has a volume of 95 L. How many moles of the same gas should I add to obtain a volume of 133 L at the same temperature and pressure.
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02/06/21

A solution is made using 103.9 g of phenol (MM = 94.11 g/mol) and 70.0 g of acetone (MM = 58.08 g/mol). What is the mole fraction of the phenol in the solution?
A solution is made using 103.9 g of phenol (MM = 94.11 g/mol) and 70.0 g of acetone (MM = 58.08 g/mol). What is the mole fraction of the phenol in the solution?
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02/06/21

Find the reminder when f(x)=2x^19-7x is divided by x+1
what Is the remainder from that equation
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02/05/21

Probability chart
Use the figure below. (Enter your answers as fractions.)(a) Find p(B' | A').(b) Find p(B' ∩ A').Hi, I have no idea what this even is so if someone could explain what is even happening in this... more
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02/05/21

need chemistry help
How many milligrams of oxygen are required to create 5.17 liters of carbon dioxide gas at STP from the complete combustion of methane (CH4) Give answer in scientific notation.
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02/05/21

Chemistry Review

Suppose that 14.0 g of nitrogen gas reacts with 6.0 grams of hydrogen gas. What mass of ammonia would you produce? Please include steps
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02/05/21

Arc length problem
Find the arc length of the curve y = x2/3 between x = 1 and x = 8
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02/04/21

Use cylindrical shells to find the volume of the solid obtained by rotating about the x-axis the region under the curve y = √(5x) from 0 to 5.
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02/04/21

Consider f ' (x) = 6x^2 + 2 and (-1,2) lies on the graph of f. Find the equation for f(x).
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02/04/21

Solve for dy/dx given y = csc (sec(x - 8 ∛3x).

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