4,365 Answered Questions for the topic Science

Science Physics

04/14/21

Conduction, Convection, Radiation
1 container is metallic and shiny, 1 container is matte black, 1 container is wide, metallic and shiny and 1 container is metallic and covered with wool outside. A student will pour hot water into... more
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04/13/21

pathophysiology case scenario question
A 72-year-old man has a radical prostatectomy for localized prostate cancer. After surgery his PSA level was undetectable. He presents 5 years later having been “lost to follow up.” He complains of... more
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04/13/21

I need help solving equation before midnight! Help, please and thank you very much!
A sample of 568 mL of chlorine gas originally at 25° C was cooled to -25° C. What is thevolume of the cooled gas?
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04/13/21

I need help solving before midnight! Please and thank you !!
A container holds 50.0 L of nitrogen at 25° C and a pressure of 750 mm Hg. What will beits volume if the temperature increases to 35° C?
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04/13/21

Calculate the standard entropy change for the reaction.
PCl5(g)      PCl3(g) + Cl2(g) Compound S° (J mol-1 K-1) PCl5 (g) 352.7 PCl3 (g) 311.7 Cl2 (g) 223.0
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04/13/21

physics question
A 4.00 kg block is released up a 30.0º incline with 128 J of kinetic energy. If the block stops 4.30m up the incline what is the friction force acting on the block? Ans: 10.2N
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04/13/21

HELP! I need help solving these chemistry questions before midnight! Please and thank you!
a.A sealed container of an unknown gas has a volume of 2.5 L and a pressure of 5 atm at 25​o​C.How much gas is in the container?b.If the mass of the gas in the container is 40.5 g, what is the... more
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04/13/21

I need help before midnight! Please and thank you!
What ​mass​ of chlorine gas is contained in a 10.0 L container at 27°C and 3.50 atm of pressure?
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04/12/21

I need help with maths. How do i insert that image? Its trigonometry.

Help. I need help with maths. How do i insert that image? Its trigonometry.
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04/12/21

I need help with maths. How do i insert that image? Its trigonometry.

Help. I need help with maths. How do i insert that image? Its trigonometry.
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04/12/21

I need help with maths. How do i insert that image? Its trigonometry.

Help. I need help with maths. How do i insert that image? Its trigonometry.
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Expert Answers •1

04/12/21

I need help with maths. How do i insert that image? Its trigonometry.

Help. I need help with maths. How do i insert that image? Its trigonometry.
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Expert Answers •1

04/12/21

can you explain this question in simple terms

What is the solution of x/9 = 42/54?
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Science Chemistry

04/12/21

How many moles of NO are required to completely react with 2.45 mol NH3
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04/12/21

NEED HELP! CAN YOU EXPLAIN TO ME WHAT I AM SUPPOSE TO DO OR HOW TO SOLVE THIS QUESTION.

 Kendra is making her homemade muffin recipe. She uses a certain amount of flour to produce the number of muffins shown in the table. Which ratio is equivalent to the number of cups of flour to the... more
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04/12/21

combining functions
 f(x)=−3x and g(x)=x2+3(f*g)(4)=???
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04/12/21

combining functions
f(x)=x3−4 and g(x)=x3 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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04/12/21

quantum numbers
a.) List all of the possible values for l in the 2nd energy level (n = 2). Leave fields blank if they are not needed.
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04/12/21

HELP ---> 3 Cu  +   8HNO3  --> 3 Cu(NO3)2   +  2 NO  +  4  H2O
3 Cu  +   8HNO3  --> 3 Cu(NO3)2   +  2 NO  +  4  H2OIn the above equation how many moles of water can be made when 144.1 grams of HNO3 are consumed?Round your answer to the nearest tenth. If you... more
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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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