4,347 Answered Questions for the topic Science

05/04/21

So no one has helped me with my chemistry homework at all and I really need it so please someone respond and help me as soon as possible

1.) 3 Cu + 8HNO3 g 3 Cu(NO3)2   + 2 NO + 4 H2OIn the above equation how many moles of NO can be made when 58 moles of HNO3 are consumed? 2.) 2 NH3 + 3 CuO g 3 Cu + N2 + 3 H2OIn the above equation... more
Follows • 1
Expert Answers •1

05/04/21

What effect would ingesting isotonic saline have on plasma ADH levels? Explain the physiological mechanisms involved

Follows • 0
Expert Answers •1

05/04/21

calculate the boiling point of 500 gram aqueous solution that contains 20% ethylene glycol (C2H6O2, a non volatille liquid) if the solvent is water
helppp, how to get its boiling point
Follows • 2
Expert Answers •1

05/03/21

Hello I have been needed help for days with my chemistry homework. Would someone kindly help me as soon as possible please

Sodium chlorate decomposes into sodium chloride and oxygen gas as seen in the equation below.  ­­2NaClO3­ --> 2NaCl +3O2 How many moles of NaCl were produced by 7 moles of NaClO3­? Round your... more
Follows • 2
Expert Answers •1

05/03/21

I am in desperate need of help with my chemistry homework as soon as possible please because I have been ignored by many tutors for hours
1.) 2 NH3 + 3 CuO g 3 Cu + N2 + 3 H2OIn the above equation how many moles of N2 can be made when 13 moles of CuO are consumed? 2.) Sodium chlorate decomposes into sodium chloride and oxygen gas as... more
Follows • 1
Expert Answers •1

05/03/21

Hi so um I need help with my homework and I have needed help for many hours please someone respond and help me as soon as possible

1.) S   + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2OIn the above equation how many moles of H2SO4 can be made when 56 moles of HNO3 are consumed?2.) S   + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2OIn the above... more
Follows • 1
Expert Answers •1

05/03/21

I need so much help with my chemistry homework because I have been stuck for days please help me as soon as possible please

1.) 3 Cu + 8HNO3 --> 3 Cu(NO3)2   + 2 NO + 4 H2OIn the above equation how many moles of water can be made when 25 moles of HNO3 are consumed?2.) Sodium chlorate decomposes into sodium chloride... more
Follows • 1
Expert Answers •1

05/03/21

Hello so no tutor has helped me and I am in desperate need of help with my chemistry homework as soon as possible please

1.) 3 Cu + 8HNO3 g 3 Cu(NO3)2   + 2 NO + 4 H2OIn the above equation how many moles of NO can be made when 58 moles of HNO3 are consumed? 2.) 2 NH3 + 3 CuO g 3 Cu + N2 + 3 H2OIn the above equation... more
Follows • 1
Expert Answers •1

05/03/21

Hola please understand that I have needed help with my homework for weeks please someone actually respond and help me

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
Follows • 1
Expert Answers •2

05/03/21

Hi so no tutors have helped me at all I need so much help. I have needed help for many hours with my chemistry homework please help me 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
Follows • 1
Expert Answers •1
Science Biology Genetics

05/03/21

I'm not sure how to answer this question.
A geneticist notes that crossing a round radish with a long radish produces oval radishes. When oval radishes were crossed with oval radishes, the F2 generation had these phenotypes: 100 long, 200... more
Follows • 1
Expert Answers •1
Science Biology Genetics

05/03/21

In some chickens, the gene for feather colour is controlled by codominance. The allele for black is and the allele for white is F W. The heterozygous phenotype is known as erminette.
What is the genotype for black chickens?What is the genotype for white chickens?What is the genotype for erminette chickens?If two erminette chickens are crossed, what is the probability that they... more
Follows • 1
Expert Answers •1
Science Chemistry

05/03/21

The boiling point of an aqueous solution with NaCl is 101.02 ∘c. Calculate the molality concentration of the solution
pls help me answering this im quite confused
Follows • 2
Expert Answers •1

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
Follows • 1
Expert Answers •1

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
Follows • 1
Expert Answers •1
Science Chemistry

05/03/21

Use Molar Concentrations to Calculate Ion Product/Compare to Ksp
20.00 mL of a 0.077 M solution of silver nitrate, AgNO3, is mixed with 30.00 mL of a 0.043 M solution of sodium acetate, NaC2H3O2. Does a precipitate form? The Ksp of AgC2H3O2 is 2.5*10^-3. Include... more
Follows • 2
Expert Answers •1
Science Chemistry

05/02/21

I need help with this question!
Determine the mass of aluminum (Al) produced in the reaction if 30.00 grams of magnesium (Mg) was consumed. 2AlPO4 (aq) + 3Mg (s) ⟶ 2Al (s) + 1Mg3(PO4)2 (aq)
Follows • 1
Expert Answers •1
Science Math Chemistry

05/02/21

A student is attempting to design an electrochemical cell that spontaneously operates when created. They are given a set of unknown chemicals and a list of their reduction potentials as shown below:
A student is attempting to design an electrochemical cell that spontaneously operates when created. They are given a set of unknown chemicals and a list of their reduction potentials as shown... more
Follows • 1
Expert Answers •1

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
Follows • 1
Expert Answers •1

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
Follows • 1
Expert Answers •1

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
Follows • 1
Expert Answers •1

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
Follows • 1
Expert Answers •1

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
Follows • 1
Expert Answers •1
Science Math Chemistry

05/02/21

Please help me with endothermic vs exothermic.

Which of the following processes is endothermic?A. H2O(g)  H2O(l)B.O2(g) + 2 H2(g)  2 H2O(g)    C. 3 O2(g) + 2 CH3OH(g)  2 CO2(g) + 2 H2O(g)D. H2O(s)  H2O(l)
Follows • 2
Expert Answers •1
Science Math Chemistry

05/02/21

Please help me with this heat problem in chemistry

Calculate the ΔH°rxn for the following reaction.SiO2(s) + 4 HCl(g)  SiCl4(g) + 2 H2O(g)You have the following data.ΔH°f [SiO2(s)] = -910.9 kJ/molΔH°f [SiCl4(g)] = -657.0 kJ/molΔH°f [HCl(g)] = -92.3... more
Follows • 2
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.