153 Answered Questions for the topic ACT Science

05/03/21

All tutors have completely ignored me please correctly help me with chemistry homework as soon as possible please

S   + 6 HNO3 → H2SO4 + 6 NO2 + 2 H2OIn the above equation, how many grams of water can be made when 4.4 moles of HNO3 are consumed?Round your answer to the nearest tenth. If you answer is a whole... more
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05/03/21

hello please respond I desperately need help with my chemistry homework as soon as possible please

1.) For the reaction C + 2H2 → CH4, how many grams of hydrogen are required to produce 17 moles of methane, CH4 ?Round your answer to the nearest tenth. If you answer is a whole number like 4,... more
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05/02/21

i need immediate help with chemistry homework quickly please because no has actually helped me
2 NH3 + 3 CuO → 3 Cu + N2 + 3 H2OIn the above equation, how many grams of N2 can be made when 18 moles of CuO are consumed?Round your answer to the nearest tenth. If you answer is a whole number... more
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05/02/21

I need so much(actual)help with my chemistry homework as soon as possible please

1.) S   + 6 HNO3 → H2SO4 + 6 NO2 + 2 H2OIn the above equation, how many grams of water can be made when 4.4 moles of HNO3 are consumed?Round your answer to the nearest tenth. If you answer is a... more
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05/02/21

Please understand that I have been ignored by almost every tutor please help me with my chemistry homework please
1.) Use the following molar masses. If you do not use these masses, the computer will mark your answer incorrect.: Element Molar Mass Hydrogen 1 Nitrogen 14 Copper 63.5 Oxygen 16  2.) 2... more
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05/02/21

hello tutors have incorrectly helped me with chemistry homework question. Please someone help me correctly as soon as possible please

1.) For the reaction C + 2H2 → CH4, how many grams of hydrogen are required to produce 17 moles of methane, CH4 ?Round your answer to the nearest tenth. If you answer is a whole number like 4,... more
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05/02/21

Hello I have been ignored by tutors please actually help me with my chemistry homework
1.) S   + 6 HNO3 → H2SO4 + 6 NO2 + 2 H2OIn the above equation, how many grams of water can be made when 17.7 moles of HNO3 are consumed?Round your answer to the nearest tenth. If you answer is a... more
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04/30/21

Hi please help me with my homework as soon as possible please I have received no help whatsoever and I am so stressed please help me pleadr
3 Cu + 8HNO3 → 3 Cu(NO3)2  + 2 NO + 4 H2OIn the above equation, how many grams of water can be made when 13.5 moles of HNO3 are consumed? Round your answer to the nearest tenth. If you answer is a... more
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04/30/21

Please someone respond and actually help me with my chemistry homework quickly please

1.) 2 NH3 + 3 CuO → 3 Cu + N2 + 3 H2OIn the above equation, how many grams of N2 can be made when 7.7 moles of CuO are consumed?Round your answer to the nearest tenth. If you answer is a whole... more
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04/30/21

Hi many tutors have ignored my question but please help me with my chemistry homework as soon as possible please because no one has helped me
3 Cu + 8HNO3 → 3 Cu(NO3)2  + 2 NO + 4 H2OIn the above equation, how many grams of water can be made when 13.5 moles of HNO3 are consumed? Round your answer to the nearest tenth. If you answer is a... more
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04/30/21

I know that it is easy to bypass a question but please think about how I actually need real help desperately with my chemistry homework as soon as possible please
1.) 2 NH3 + 3 CuO → 3 Cu + N2 + 3 H2OIn the above equation, how many grams of N2 can be made when 7.7 moles of CuO are consumed?Round your answer to the nearest tenth. If you answer is a whole... more
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04/30/21

Please help me because I have needed help with my chemistry homework for many hours

3 Cu + 8HNO3 → 3 Cu(NO3)2  + 2 NO + 4 H2OIn the above equation, how many grams of water can be made when 13.5 moles of HNO3 are consumed? Round your answer to the nearest tenth. If you answer is a... more
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04/30/21

I know that it is easy to bypass a question but please think about how I need help desperately with my chemistry homework as soon as possible please
1.) 2 NH3 + 3 CuO → 3 Cu + N2 + 3 H2OIn the above equation, how many grams of N2 can be made when 7.7 moles of CuO are consumed?Round your answer to the nearest tenth. If you answer is a whole... more
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Act Science Math Science English

04/16/21

What is the chances of getting a perfect score of 36 on the ACT when there is a 25% chance of getting 155 of them right and 20% chance of getting the other 60 right
So this is basically me wondering what the probability of getting a 36 on the ACT with completing guessing each and every problem. Just a curious question. Math has 5 answer choices for each and... more
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Act Science Science Biology Chemistry

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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Act Science Science Biology Chemistry

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

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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Act Science Science Chemistry Physics

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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Act Science Math Science Biology

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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Act Science Math Science Biology

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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Act Science Math Science Biology

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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Act Science Science Chemistry Nursing

03/31/21

At the point in a titration where 5.00 mL of 0.225 mol/L hydrochloric acid, HCl(aq), is added to 40.00 mL of 0.175 mol/L potassium hydroxide, KOH(aq), what is the pH of the solution?

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Act Science Science Chemistry

03/30/21

concentration question
Determine the pH and pOH of a solution at 25°C with a hydronium ion, H3O+(aq), concentration of 3.20x10-10 mol/L. (please show me all the steps when solving this)
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Act Science Math Business Sat Math

03/29/21

normal distribution
the mean clotting time of blood is 7.45 seconds with a standard deviation of 3.6 seconds. what is the probability that an individual's clotting time will be less than 4 seconds or greater than 9... more
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