4,374 Answered Questions for the topic Science

04/11/21

If you measure the size of each plate to be 12 cm2, how far apart are the plates, in micrometers?

 A 0.054 μF capacitor is being held at a potential difference of 431 μV. I keep getting an answer 1.967 * 1o^-7 which is wrong. Please explain and show your work. Thanks!
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04/11/21

combining functions
Find (f∘g)(2) for the following functions. f(−9)=−13 and g(2)=−9(f*g)(2)=???
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04/10/21

combining functions
f(x)=4x and g(x)=cube of √x Step 2 of 2 : Find the formula for (f/g)(x) and simplify your answer. Then find the domain for (f/g)(x).(f/g)(x)=???Domain=???
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04/10/21

physics question
You load a 7.6g AAA battery into your new mini penlight flashlight. The spring at the bottom of the battery compartment has a k=89 and you compress it 2.0 cm as you screw on the cap. At camp you... more
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04/10/21

physics question
Tommy gives Sally (mass 55.0kg) sitting on a swing an underdog and lifts her 1.25m higher than she was when sitting stationary at the bottom of the swing. a. What should Sally’s velocity be when... more
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04/10/21

physics question
A 25 g pellet is placed in the barrel of a toy gun and is propelled by a spring with a spring constant of 50. N/m. The gun is held vertically, the spring is compressed 20. cm and then released... more
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04/10/21

combining functions
f(x)=x2−4 and g(x)=4x Step 1 of 2 : Find the formula for (f+g)(x) and simplify your answer. Then find the domain for (f+g)(x). (f+g)(x)=???Domain=???
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04/09/21

Calculate wavelength
Calculate the wavelength of: a.) an electron (9.10×10-31 kg) moving at a speed of 5.81×106 m/s (13000000 miles per hour).      b.) a baseball (0.140 kg) moving at a speed of 40.2 m/s... more
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04/09/21

Combining functions
f={(−4,−1),(1,−1),(−1,−3)}andg={(0,2),(1,−1),(−4,2)}Step 1 of 4 : Find (f+g)(1).=???
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04/08/21

How can we prevent the earth's average temperature from rising by more than 2 ° C to 2100?

someone explain in detail?
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04/08/21

Why do these manifestations occur in end-stage renal failure?
Explain why each of the following manifestations occurs in end-stage renal failure:  Metabolic acidosis  Hyperkalemia  Hypocalcemia  Increased BUN and serum creatinine  Anemia  Impaired... more
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04/08/21

Predict the sign of ΔS for the following reactions. Then predict whether the reaction is spontaneous, non-spontaneous, or dependent on the magnitude of ΔH, ΔS and temperature.

a.) Na2CO3 (s) Na2O (s) + CO2 (g) (endothermic) b.) 2NF3 (l) N2 (g) + 3F2(g) (exothermic) c.) 2XeO3 (s) 2Xe (g) + 3O2(g) (exothermic)
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04/08/21

Specific Heat/Heat Transfer
Glass Liquid Water Oxygen Gas Wood Concrete Gold Carbon Dioxide Gas rank the following substances in the order of their specific heats from lowest to highest.
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04/08/21

Bohr model calculations
Calculate the energy of an electron in the n = 3 level of a hydrogen atom.
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04/08/21

Bohr model calculations
Calculate the energy for the transition of an electron from the n = 8 level to the n = 7 level of a hydrogen atom.E =  ???JoulesIs this an absorption or an emission process?____???_____
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04/07/21

Need help before April 10th! Please and thank you!
___C6H6+ ___Cl2→ ___C6H5Cl + ___HClWhen 39.0 g of C6H6reacts with an excess of Cl2, the actual yield of C6H5Cl is 42.0 g. What is the percent yield of C6H5Cl?
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Science Math Chemistry

04/07/21

Help With A Chemistry Problem Please
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Science Math Chemistry

04/07/21

Help With A Chemistry Problem Please
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Science Math Chemistry

04/06/21

Unsure how to solve a chemistry problem, all help is appreciated.
Calculate the enthalpy of reaction for the decomposition of hydrogen peroxide to water and oxygen gas according to the following equation. H2O2(l) ------->H2O(l) + O2(g) Use the following Table... more
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04/06/21

inverse of functions
y=4x−2Find four points contained in the inverse.
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04/05/21

What is the magnification of the image?

Suppose that you have a converging lens that produces a real image of a small object. The image is at a distance of 150 cm to the left of the lens and the object is at a distance of 75 cm to the... more
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04/05/21

Will the image of the object be on the right side or left side of the lens?

Suppose that you have a converging lens with a focal length of 20 cm and you place a small object at a distance of 25 cm to the right of the lens. I understand the image will be real so just not... more
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04/05/21

Chemistry Help Please

3Al (s) + 3NH4ClO4 -->Al2O3(s) + AlCl3 (s) + 3NO (g) + 6H2O (l)1)Which reactant is the limiting reactant if 4.25 g of Al is mixed with 5.46 g of NH4ClO4 2)How many grams of Al2O3 can be... more
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04/05/21

Ethalpy reactions
The following reaction is endothermic. MgCl2(s) Mg(s) + Cl2(g)    ΔH(1) = 641 kJ Calculate the enthalpy change for the reaction of the elements to form one mole... more
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04/05/21

Calculate enthalpy change
Given the following two reactions:(1)Pb(s) + Cl2(g)PbCl2(s)     H(1) = -359.4 kJ(2)Mg(s) + Cl2(g)MgCl2(s)     H(2) = -641.3 kJcalculate the enthalpy change for the following reaction:(3) Pb(s) +... more
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