447 Answered Questions for the topic chem

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Use Lewis electron dot diagrams to illustrate the chemical bond in the following items. Identify if its ionic or covalentMagnesium Iodide (MgI)

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3 Cu  +   8HNO3  --> 3 Cu(NO3)2   +  2 NO  +  4  H2OIn the above equation how many moles of water can be made when 102.3 grams of HNO3 are consumed?Round your answer to the nearest tenth. If you... more

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2 NH3 + 3CuO g 3 Cu + N2 + 3 H2OIn the above equation how many moles of water can be made when 3 moles of NH3 are consumed ?please help

06/15/21

4NH3 + 5O2 = 4NO + 6H2O How many moles of NO are produced if 6.96 grams of NH3 react with an excess amount of oxygen?

Grateful for any help! If you could explain the work that'd be helpful as well!

06/15/21

4NH3 + 5O2 = 4NO + 6H2O If you made with 9.67 moles of H20, how many moles of NO were also produced?

Already balanced equation I keep getting this one wrong and I'm not sure if it's my setup or if I'm dividing something wrong. Grateful for any help given!

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S   + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2OIn the above equation how many grams of water can be made when 9 grams of HNO3 are consumed?Use the following molar masses. If you do not use these masses,... more

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S   + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2OIn the above equation how many grams of water can be made when 9 grams of HNO3 are consumed?Use the following molar masses. If you do not use these masses,... more

Hello. Please don’t bypass my question. My homework is due in 30 minutes and I need lots of assistance!

2 NH3 + 3 CuO g 3 Cu + N2 + 3 H2OIn the above equation how many grams of N2 can be made when 170 grams of CuO are consumed?Round your answer to the nearest tenth. If you answer is a whole number... more

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3 Cu + 8HNO3 --> 3 Cu(NO3)2   + 2 NO + 4 H2OIn the above equation how many grams of water can be made when 6 grams of HNO3 are consumed?Round your answer to the nearest tenth. If you answer is a... more

my homework is due in a few hours and I am confused. Please... help... quickly!

Sodium chlorate decomposes into sodium chloride and oxygen gas as seen in the equation below.   ­­2NaClO3­ --> 2NaCl +3O2  How many grams of NaClO3­ were needed to produce 6 grams of O2? Round... more

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Question 1:For the reaction 2HNO3 + Mg(OH)2 → Mg(NO3) 2 + 2H2O, how many grams of magnesium nitrate are produced from 4 grams of nitric acid, HNO3 ?Round your answer to the nearest tenth. Do not... more

Hello. My chemistry homework is due in 1 hour. I continue to get this question wrong time and time again. Please help me as soon as possible please!!

Question 1: 2 NH3 + 3 CuO g 3 Cu + N2 + 3 H2OIn the above equation how many grams of N2 can be made when 158 grams of CuO are consumed?Round your answer to the nearest tenth. If you answer is a... more

06/11/21

Mass of CaCl2: 10,0 g Mass of Na2CO3: 10.0 g Actual amount collected: 2.00 g CaCO3 1. Write a balanced chemical equation.

A student performs a lab at school. They massed out both reactants and then mixed them together. The reaction produced a precipitate. They filtered out the product and took the mass of it. (I'm a... more
Chem Chemistry

06/07/21

Chemistry Unit 9 and 10

The pH of the ocean is 8.1. What is the concentration of hydroxide ions?

Hello please help me I need help today with my chemistry homework and i am on the verge of tears please help me.

1.) S   + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2OIn the above equation how many moles of water can be made when 163.6 grams of HNO3 are consumed?Round your answer to the nearest tenth. If you answer is... more

I need to finish this in the next hour. Please someone help me with my chemistry homework as soon as possible please

1.) S   + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2OIn the above equation how many moles of water can be made when 163.6 grams of HNO3 are consumed?Round your answer to the nearest tenth. If you answer is... more

Please I have waited two weeks to receive help. Please help me with my science homework. Plesse

1.) S   + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2OIn the above equation how many moles of water can be made when 163.6 grams of HNO3 are consumed?Round your answer to the nearest tenth. If you answer is... more

Hello. Please help me it’s down to the wire and I need immediate help with chemistry homework as soon as possible please

S   + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2OIn the above equation how many moles of water can be made when 110.4 grams of HNO3 are consumed?Round your answer to the nearest tenth. If you answer is a... more

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