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Questions tagged 'Inventions & Discoveries'

31 questions

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Anonymous

Feb 18, 2025

How many grams of Phosgenite can be obtained…..?

How many grams of phosgenite can be obtained from 14.5 g of PbO and 14.5 g of NaCl in the presence of excess water and CO2? The balanced equation is as follows: 2PbO + 2NaCl + H2O + CO2 = Pb2Cl2CO3 +...

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Anonymous

Feb 17, 2025

Carminic acid, a naturally occurring red pigment extracted from the cochineal insect, contains only carbon, hy?

Carminic acid, a naturally occurring red pigment extracted from the cochineal insect, is composed of carbon, hydrogen, and oxygen. It was commonly used as a dye in the first half of the nineteenth cen...

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Anonymous

Feb 14, 2025

Predict the products of each of these reactions and write balanced molecular equations for each.?

Predict the products of the following reaction and write balanced molecular equations: What are the products of the reaction between aqueous strontium sulfide and aqueous potassium sulfate?

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Anonymous

Feb 13, 2025

What was Dr. Compton Seaforth's invention?

What was Dr. Compton Seaforth's invention? Could you please provide details about the significance and impact of this invention? Thank you for your help.

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Anonymous

Feb 13, 2025

What did Dr. Compton Seaforth invent?

What did Dr. Compton Seaforth invent? Could you provide details about his invention and its impact? Thank you in advance.

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Anonymous

Feb 13, 2025

Catalysts can save money by essentially lowering what?

Catalysts can save money by effectively lowering which of the following? Please select all that apply: a. activation energy b. cost of reactants c. rate of reaction d. temperature required e. starting...

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Jayme Osinski

Feb 09, 2025

If 30.0g of MgSO4*7H2O is thoroughly heated, what mass of anhydrous magnesium sulfate will remain?

If 30.0 g of magnesium sulfate heptahydrate (MgSO4·7H2O) is thoroughly heated, what mass of anhydrous magnesium sulfate (MgSO4) will remain after the water molecules are lost?

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Anonymous

Feb 07, 2025

Predict the formula for a compound made from X+ and Y–.?

I have a couple of questions regarding chemical compounds and electron configurations: 1) I believe the formula for the compound made from X+ and Y– is XY2. Is this correct or incorrect? Could you ple...

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Anonymous

Feb 04, 2025

A biotechnology researcher might work on what?

A biotechnology researcher may engage in various activities, including: Developing biofuels from renewable resources. Designing innovative hospital beds to improve patient care. Conducting tests on b...