4,374 Answered Questions for the topic Science

04/14/21

Please help me, I would greatly appreciate it! I have to be able to understand this to move on!
Determine the final pressure when a constant volume of gas originally at 101.3 kPa is heated from 25​ celcius to 35​celcius.
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04/14/21

Need help before midnight, I am confused:/
A sample of gas has a pressure of 3 atm at 300 K. What will be the pressure if the sample is cooled to 200K?
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04/14/21

Need to solve before midnight! Please send help, thank you!
A gas sample initially has a temperature of 150K and a pressure of 409kPa. If the other gas parameters are kept constant, and the temperature is adjusted to 436K, what is the new pressure in kPa?
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04/14/21

Have to answer before midnight! Please help, thank you!
A gas sample initially has a pressure of 2atm and a volume of 58L. If the other gas parameters are kept constant, and the volume is adjusted to 4L, what is the new pressure in atm? 
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Science Chemistry

04/14/21

What is the empirical formula of a compound that contains 10.52 grams of nickel, 4.38 grams of carbon, 5.10 grams of nitrogen?
An empirical formula shows the smallest whole-number ratio of different atoms in a chemical substance. However, the simplest ratio does not always indicate the actual ratio in the chemical... more
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Science Chemistry

04/14/21

What is the empirical formula of monosodium glutamate (MSG) which contains 35.50% C, 4.77% H, 8.29% N, 13.6% Na, and 37.90% O?
An empirical formula shows the smallest whole-number ratio of different atoms in a chemical substance. However, the simplest ratio does not always indicate the actual ratio in the chemical... more
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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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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

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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