09/05/20

Limit x approaches to pi
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09/04/20

Calculators have several ways to enter numbers in scientific notation. You are not allowed to use the ________________ button when you enter the number in your calculator. You should use __________. *
A. Multiplication ; parenthesis ( )B. x10^ ; EXP or EEC. Multiplication ; timesD. Multiplication ; EXP or EEE. x10^ ; Multiplication
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09/03/20

Integrating an ODE
ODE: x(dt/dx)=C, where đ¶ is constant, in the domain đ‘„1 ≀ đ‘„ ≀ đ‘„2, subject to boundary conditions: 𝑇(đ‘„1 ) = 𝑇1 and 𝑇(đ‘„2 ) = 𝑇2. Find the dimensionless temperature distribution 𝑇(đ‘„)−𝑇1 𝑇2−𝑇1 . Looking... more
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09/02/20

A medication is given at a dosage of 3.000 mg of medication per kg of body weight. If 0.1500 g of medication is given, then what was the patient’s weight in pounds (lbs.)?

put the answer in scientific notation
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09/02/20

Can addition reactions occur without an unsaturated hydrocarbon as a reactant?
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09/01/20

How do you find f'(2) using the limit definition given f(x)=5x-3
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09/01/20

An empty capacitor is capable of storing 1.0 × 10-4 J of energy when connected to a certain battery. If the distance between the plates is halved and then filled with a dielectric (Îș = 3.3),

An empty capacitor is capable of storing 1.0 × 10-4 J of energy when connected to a certain battery. If the distance between the plates is halved and then filled with a dielectric (Îș = 3.3), how... more
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09/01/20

An aqueous solution of 2.7 M hydrochloric acid has a density of 1.1 g/mL. How many mmol of hydrochloric acid are present in 15.4 mL of this solution?

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09/01/20

Find the other endpoint of the line segment with the given endpoint and midpoint. Endpoint (0,2), midpoint (-8,-10)
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08/31/20

A certain substance has a heat of vaporization of 55.94kJ/mol. At what Kelvin temperature will the vapor pressure be 8.00 times higher than it was at 319 K
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08/27/20

What is the molality of an aqueous solution of potassium hydroxide (KOH, 56.106 g/mol) if the molarity of the solution is 6.57 mol/L?

Be sure to read the graph carefully. Enter your value using three significant figures.
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08/27/20

Two cars leave the beach at different times
You are going on a trip to the beach with some friends in two cars and leaving at separate times. The first car leaves at 9AM and travels at a speed of 45mph. The second car leaves at 10:30 and... more
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08/27/20

AB bisects LN midpoint M. If LN =7x+3 and LM =2x+12 find x and MN
AB have a line with arrows on both sides above it LN has a line with no arrows above it
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08/27/20

. If the two wires in the thermocouple are made from the same metal and are placed in different temperatures, the voltage produced will be a.the minimum b.the maximum c.zero d.constantly changing

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08/27/20

Please help with this chemistry question
Chemical equilibrium is reached when the forward and reverse reaction rates are equal. What would happen if the concentration of products of more reactants were added to a reaction that was in... more
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08/25/20

How can I show if the sequence is limited
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08/24/20

Percent yield question
In the reaction of  g of salicylic acid (138.12 g/mol) with  g of acetic anhydride (102.10 g/mol), a student obtained  g of acetylsalicylic acid (180.17 g/mol). What is the percent yield?
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08/21/20

Estimate percent relative standard deviation equation numbers in parenthesis are absolute standard deviations. answer%RSD to two significant figures y = 6.75( 0.02 ) + 0.843 ( 0.003 ) -7.021( 0.002)
Estimate percent relative standard deviation for the following calculation. The numbers in parenthesis are absolute standard deviations. Give answer as %RSD to two significant figures (do not... more
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08/21/20

The distance from the centre of a regular pentagon to each of its vertices is 6cm.Calculate the perimeter of the pentagon
I don't really understand this :(
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08/21/20

(2sinxcosx-cosx)/(1-sinx+sinÂČx-cosÂČx)=cot
If you can explain it will be a big help thanksss
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08/21/20

What volume in millilitres of 0.06176 M HCl is required to titrate 50.00 mL of solution containing 0.02159 M NaHCO3 and 0.0245 M Na2CO3 to a methyl red end point?
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08/18/20

Humidity and vapor pressure question
How much does the mole fraction of O2 in the atmosphere change at 20℃ as the relative humidity varies from 100% to 0%?. In dry air, the mole fraction of O2 is known to be 0.2095.
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08/10/20

When X-rays with λ = 0.7873 Å are used, the second-order Bragg reflection from a set of parallel planes in a niobium crystal occurs at an angle Ξ = 24.41°.

When X-rays with λ = 0.7873 Å are used, the second-order Bragg reflection from a set of parallel planes in a niobium crystal occurs at an angle Ξ = 24.41°. Calculate the distance between the planes... more
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08/09/20

Estimate the area
f(x)=1/x+8 from x=0 to x=5 using a Riemann sum with n=10 subintervals with both left and right endpoints
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08/07/20

What instrument is used to measure the concentration?
In a chemical reaction I need to know the instrument you use to measure concentration.
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