4,365 Answered Questions for the topic Science

Science

05/21/21

how many grams of water are produced from 1.5 moles of oxygen

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05/21/21

physics question (idk how to do them :( )
An ice skater (m=76.4kg) is rotating in at 1.00 rad/s while moving linearly 1.50m/s. She pulls in her arms and reduces her moment of inertia from 3.60 kgm^2 to 0.300 kgm^2.a. Neglecting friction,... more
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05/21/21

physics question (answer is given, but idk how to do this)
A wind turbine with 3 blades that rotate about their end (rod rotating about its end) spins with an angular velocity of 1.26 rad/s. Each blade is 25.4m long and has a mass of 13,600kg. The height... more
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05/21/21

When the terminals of a 100-volt battery are connected to 2 large parallel horizontal plates 2cm apart, the electric field in the region...
When the terminals of a 100-volt battery are connected to 2 large parallel horizontal plates 2cm apart, the electric field in the region between the plates is very nearly uniform with magnitude E=... more
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05/21/21

physics question
A tangential force of 360 N acts for a time of 5.0 seconds at the edge of a potter’s wheel (solid cylinder or disc) with radius 50.cm and mass 45kg. What is the change in its angular velocity?[ans:... more
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Science

05/21/21

Mendel discovered that if a purple flowered pea plant was crossed with a white flowered pea plant, all the offspring had what color flowers?

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Science

05/21/21

what is the highest occupied energy level of a noble gas atom
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05/20/21

If anyone could help me out that would be amazing,with hemi
What is the greatest amount of sodium chloride in moles that can be made with 13 grams copper II chloride and 15 grams sodium nitrate? Which reactant is limiting? How many moles of the excess... more
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05/20/21

Chemistry question

What is the greatest amount of sodium chloride in moles that can be made with 13 grams copper II chloride and 15 grams sodium nitrate? Which reactant is limiting? How many moles of the excess... more
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05/20/21

chemistry question I would really love if someone can help me
2.      How many grams of sodium nitrate can be produced with 60 grams of sodium chloride and 55 grams of lead IV nitrate? Which reactant is limiting? How many grams of the excess reactant will be... more
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05/20/21

Limiting Reactant in Grams
1.      What is the greatest amount of silicon tetrafluoride in grams that can be produced 48 grams of HF and 92 grams of SiO2? Which reactant is limiting? How many grams of the excess... more
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05/20/21

question practice chemistry

1.      What is the greatest amount of sodium chloride in moles that can be made with 13 grams copper II chloride and 15 grams sodium nitrate? Which reactant is limiting? How many moles... more
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05/19/21

Genetic Engineering
Do you think genetic engineering is/could be harmful to society? Why?
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05/19/21

Which of the following are equal to -40 F? check all that apply.

A. 223 KB. -80 CC. 200 KD. -40 C
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Science Chemistry

05/19/21

Students in a chemistry class added 5 g of Zinc (Zn) to 50 g of hydrochloric acid (HCl). A chemical reaction occurred that produced zinc chloride (ZnCl2) and 6 g of hydrogen gas (H2).
Students in a chemistry class added 5 g of Zinc (Zn) to 50 g of hydrochloric acid (HCl). A chemical reaction occurred that produced zinc chloride (ZnCl2) and 6 g of hydrogen gas (H2). Zn+ HCl →... more
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Science Chemistry

05/18/21

Chemistry question on limiting reactants

How many moles of black iron oxide (Fe3O4) can be produced from 9.2 moles of water and 3.4 moles of iron ? Which is the limiting reactant and how many moles of the excess reactant will be left... more
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Science Biology Chemistry

05/18/21

Chemistry problem
What is the greatest amount of magnesium oxide in moles that can be made with 6.3 mol Mg and 6.9 mol ? Which reactant is O2 limiting ? How many moles of the excess reactant will be left after the... more
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05/18/21

15. The bonds between atoms store ______________________, When the bonds break the energy (in the form of light or heat) can be released.
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05/18/21

This would be a huge help
1.      What is the greatest amount of magnesium oxide in moles that can be made with 6.3 mol Mg and 6.9 mol O2? Which reactant is limiting? How many moles of the excess reactant will be left after... more
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05/18/21

Chemistry question

How many moles of sodium sulfate are formed when 13.2 moles of sulfuric acid reacts with 30.6 moles of sodium hydroxide? Which reactant is limiting? How many moles of the excess reactant will be... more
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05/18/21

Practice question

How many moles of sodium sulfate are formed when 13.2 moles of sulfuric acid reacts with 30.6 moles of sodium hydroxide? Which reactant is limiting? How many moles of the excess reactant will be... more
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05/18/21

limiting reactions

2.   How many moles of sodium sulfate are formed when 13.2 moles of sulfuric acid reacts with 30.6 moles of sodium hydroxide? Which reactant is limiting? How many moles of the excess reactant will... more
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Science

05/18/21

What is the speed of a wave with a wavelength of 4 m and a frequency of 2 Hz?
 What is the speed of a wave with a wavelength of 4 m and a frequency of 2 Hz?
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05/18/21

practice #3 questions
1.      What is the greatest amount of copper IV nitrate in moles that can be made with 24.3 mol copper II chloride and 20.9 mol sodium nitrate? Which reactant is limiting? How many... more
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05/18/21

Practice #2 questions
1.      What is the greatest amount of magnesium oxide in moles that can be made with 6.3 mol Mg and 6.9 mol O2? Which reactant is limiting? How many moles of the excess reactant will be left... more
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