JACQUES D.

04/03/22

What is the equilibrium constant for a reaction at temperature 52.5 °C if the equilibrium constant at 21.3 °C is 42.7? For this reaction, ΔrH° = 10.4 kJ mol-1 .

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04/03/22

sulfate determination

0.1 g of the mixture of Na2SO4 and K2SO4 is taken and 100 mL of solution of it is prepared. A portion of 10 ml of this prepared solution is placed in a beaker and some distilled water is added. A... more

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Statistics

04/03/22

Binomial Distribution: Standard Deviation, am I getting this wrong?

I am testing out a Binomial distributed dataset in excel.The dataset is litterally a "RANDBETWEEN(1;2)" So it simply randomizes between the number 1 and the number 2 on a range of 10.000 cells. The... more

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Chemistry

04/02/22

I understand how to do ICE tables chemistry but how would apply it or calculate for this table?

Test Tube: Volume of 1.25x10^-4M Fe(NO3)3mL: Volume of 1.0M KSCN mL: Volume of 0.10M HNO3 mL 1 0.50 2.50 ... more

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Answers •1

Algebra 1 Algebra 2

04/02/22

The transpose of a matrix with dimensions 7 x 4 would be a matrix with dimensions of:

A. 2 X 14B. 4 X 7C. 28 D. 14 X 2

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Calculus Derivatives Composite Differentiation

04/01/22

How would I answer the following question?

Give an example of a situation in which a composite differentiation might be used. Give examples of functions that may be applicable and show how the relevant rates of change might be calculated.

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Statistics

04/01/22

if P(E)= 0.3 and P(F)= 0.4 and P(EunionF) = 0.1 then P(E U F)=

The symbol for the union is the upside down U but I couldn't find it to type it. I am not sure what the formula for this problem is.

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Math Physics

03/31/22

HEAT TRANSFER QUESTION (PHYSICS)

Two different metal plates A and B are joined together as shown. The temperature on the side of metal A is at 150oC, while the temperature on the side of metal B is at 40oC. If Metal A has a... more

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Chemistry

03/31/22

Arrange these solutes from most soluble in water to least soluble in water. CoCl2, NiCl2, AuCl3, K2C2O7

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Answers •1

Calculus Precalculus Division

03/30/22

How do I find the oblique asymptote of this: y= (x-1)^3 / x^2

I tried to use long division but I don’t get how to do it since x2 is not a binomial. I’m also confused about how to divide if the numerator is in brackets and has an exponent. I tried to expand it... more

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Answers •2

Precalculus

03/30/22

Find all rational zeros of the polynomial.

Find all rational zeros of the polynomial. (Enter your answers as a comma-separated list. Enter all answers including repetitions.)P(x) = x5 − 6x4 − x3 + 34x2 − 12x − 40

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Calculus

03/30/22

Find the linearization of the function f(x)=1/2x+1 at x=−1.

Find the linearization of the function f(x)=1/2x+1 at x=−1.Find the true values of f(x) and the approximations using L(x) below. Round all of your answers to 3 decimal places. You can use a... more

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Geometry

03/30/22

C has a diameter with endpoints of (−5,3) and (1,−5). Select another point located on circle C

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Answers •2

Chemistry

03/30/22

What volume of no2 can be produced from 15 dm^3 of nitrogen and 20 dm^3 of oxygen if all three gases are at the same temperature and pressure?

I'm just confused about how to get started. I converted dm^3 to L and found out the mol of each element, using the ideal gas law. and got 183 mol of n and 244 mol of O. then I multiplied 183 by the... more

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Chemistry

03/30/22

how can i do this question?

Sodium bicarbonate, NaHCO,, can be used to treat acid reflex which is anoverproduction of hydrochloric acid in the body. This is accomplished by a twostep reaction, which results in the production... more

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Biology Physics Anatomy

03/29/22

If you went to inhale and the pressure of air in the atmosphere was equal to the pressure in your lungs, what would happen to air flow into your lungs?

Our ability to breathe is determined by the pressure of the air in the atmosphere, relative to the air in our lungs. If you went to inhale and the pressure of air in the atmosphere was equal to the... more

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Chemistry

03/29/22

102 chemistry. college

How many milliliters of an aqueous solution of 0.231 M iron(III) sulfate is needed to obtain 17.2 grams of the salt?

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Answers •1

General Physics 2

03/29/22

Electric Flux and Gauss's Law (Please Help)

A long straight wire has a charge per unit length of 3.00 x 10-12C/m. At what distance from the wire is the electric field equal to 0.600N/C?

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Answers •2

Math Calculus Maths

03/29/22

An airplane is flying parallel to the ground at an altitude of 2 km and at a speed of 4(1/2km)/minf the plane flies directly over the Statue of Liberty,

An airplane is flying parallel to the ground at an altitude of 2 km and at a speed of 4(1/2km)/min. If the plane flies directly over the Statue of Liberty, at what rate is the line- of- sight... more

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Math Chemistry

03/28/22

Combine gas law problem

For many purposes we can treat ammonia (NH3) as an ideal gas at a temperature above it’s boiling point of 133 degrees celsius. Suppose the temperature of a sample of ammonia gas is lowered from... more

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Algebra 2 Calculus Chemistry

03/28/22

At a festival, spherical balloons with a radius of 160. cm are to be inflated with hot air and released. The air at the festival will have a temperature of 25°C

It must be heated to 100°C to make the balloons float. 1.00kg of propane C3H8 fuel is available to be burned to heat the air. Calculate the maximum number of balloons that can be inflated with hot... more

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Algebra 2

03/28/22

I need help remembering this.

Consider the interior of an imaginary sphere on which the light shines. The surface area of the sphere is directly proportional to the square of the radius. If the surface area of a sphere with... more

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General Chemistry

03/28/22

Calculate ΔH the combustion of ethane using the given bond dissociation energies: 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O

Calculate ΔH the combustion of ethane using the given bond dissociation energies: 2 C2H6 + 7 O2 → 4 CO2 + 6 H2OBond dissociation energies: C-C (347 kJ/mol); C-H (413 kJ/mol); O=O... more

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Precalculus

03/27/22

Answer Checking

Find the length of the arc of a circle of diameter 10 meters subtended by a central angle of π/3 radians.Round answer to two decimal places.My answer: 10.47 meters

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Answers •2

Math Science Physics

03/26/22

Physics Concave lens Question Help please

An object is located to the left of a concave lens whose focal length is -35 cm. The magnification produced by the lens is m1 = 0.36.A. To decrease the magnification to m2= 0.23, should the object... more

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Answers •1

What is the equilibrium constant for a reaction at temperature 52.5 °C if the equilibrium constant at 21.3 °C is 42.7? For this reaction, ΔrH° = 10.4 kJ mol-1 .

sulfate determination

Binomial Distribution: Standard Deviation, am I getting this wrong?

I understand how to do ICE tables chemistry but how would apply it or calculate for this table?

The transpose of a matrix with dimensions 7 x 4 would be a matrix with dimensions of:

How would I answer the following question?

if P(E)= 0.3 and P(F)= 0.4 and P(EunionF) = 0.1 then P(E U F)=

HEAT TRANSFER QUESTION (PHYSICS)

Arrange these solutes from most soluble in water to least soluble in water. CoCl2, NiCl2, AuCl3, K2C2O7

How do I find the oblique asymptote of this: y= (x-1)^3 / x^2

Find all rational zeros of the polynomial.

Find the linearization of the function f(x)=1/2x+1 at x=−1.

C has a diameter with endpoints of (−5,3) and (1,−5). Select another point located on circle C

What volume of no2 can be produced from 15 dm^3 of nitrogen and 20 dm^3 of oxygen if all three gases are at the same temperature and pressure?

how can i do this question?

If you went to inhale and the pressure of air in the atmosphere was equal to the pressure in your lungs, what would happen to air flow into your lungs?

102 chemistry. college

Electric Flux and Gauss's Law (Please Help)

An airplane is flying parallel to the ground at an altitude of 2 km and at a speed of 4(1/2km)/minf the plane flies directly over the Statue of Liberty,

Combine gas law problem

At a festival, spherical balloons with a radius of 160. cm are to be inflated with hot air and released. The air at the festival will have a temperature of 25°C

I need help remembering this.

Calculate ΔH the combustion of ethane using the given bond dissociation energies: 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O

Answer Checking

Physics Concave lens Question Help please

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