J.R. S.

05/22/20

100 g of a liquid is 25 °C and is heated to raise the temperature of the liquid to 50.0 °C. The thermal energy gained by the liquid is 6100 J. The specific heat of the liquid is

100 g of a liquid is 25 °C and is heated to raise the temperature of the liquid to 50.0 °C. The thermal energy gained by the liquid is 6100 J. The specific heat of the liquid is?

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Chemistry

05/22/20

Perform the calculation and report the answer using the proper number of significant figures.

Perform the calculation and report the answer using the proper number of significant figures. Make sure the answer is rounded correctly. 1.012×10−3 J/ (0.025456 g)(298.3682−298.3567) K = 3.60 ... more

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Chemistry

05/22/20

Find the molarity of the HNO3 solution and its absolute uncertainty.

A solution of HNO3 is standardized by reaction with pure sodium carbonate. 2H+ +Na2CO3⟶2Na+ +H2O +CO2 A volume of 28.24 ± 0.05 mL of HNO3 solution was required for complete reaction with ... more

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Chemistry

05/21/20

Limiting and Excess Stoichiometry Questions

Please Help. Thanks alot.1. What mass of Al2 SO4 is needed to create 100g of Al(NO3 )3 in the reaction below (NOT BALANCED):Al2(SO4)3 + Ba(NO3) =2. Copper (II) chloride reacts with sodium nitrate... more

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Chemistry

05/21/20

I need help on my chemistry homework!! I don't know what I'm doing wrong:/

Phosphorus pentachloride decomposes according to the chemical equation PCl5(g)↽−−⇀PCl3(g)+Cl2(g)𝐾c=1.80 at 250 ∘C A 0.2936 mol sample of PCl5(g) is injected into an empty 4.20 L reaction... more

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Chemistry

05/21/20

A sample of N2 occupies a volume of 125 mL at 37°C. What volume will it occupy at 15°C?

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Chemistry

05/21/20

The volume of a gas is 200.0 mL at 475 K. Find its volume at STP.

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Chemistry

05/21/20

What is the new volume if 60.0 mL of gas is cooled from 33.0°C to 5.00°C?

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Chemistry

05/21/20

Oxygen gas is at a temperature of 40°C when it occupies a volume of 2.3 L. To what temperature should it be raised to occupy a volume of 6.5 L?

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Chemistry

05/21/20

Manganese makes up 1.3 × 10–4 percent by mass of the elements found in a normal healthy body. How many grams of manganese would be found in the body of a person weighing 274 lb? (2.205 lb = 1 kg) 56 g

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Chemistry

05/21/20

A monolayer containing 3.21 x 10^-6 g of oleic acid has an area of 20.0cm^2. The density of oleic acid is 0.895 g/mL. What is the thickness of the monolayer ( the length of an oleic acid molecule) ?

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Science Chemistry Organic Chemistry

05/21/20

How many grams of water react completely with 5.0 g iron(III) chloride in the following reaction: iron(III) chloride + water → iron(III) hydroxide + hydrochloric acid

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Science Chemistry Organic Chemistry

05/21/20

what is the oxidation number of manganese in permanganate ion?

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Science Chemistry Organic Chemistry

05/21/20

how many grams of water react with 5 grams iron chloride

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Science Chemistry Organic Chemistry

05/21/20

how many grams of water are produced when 2.50 mol oxygen reacts with hydrogen

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Science Chemistry Organic Chemistry

05/21/20

how many grams of water are produced from reacting 32.0 g hydrogen??

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Chemistry

05/20/20

Calculate the endpoint volume

The total volume required to reach the endpoint of a titration required more than the total volume of the buret. An initial volume of 49.64 ± 0.06 mL was delivered, the buret was refilled, and an... more

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Chemistry

05/20/20

Chemistry Question for Stoichiometry

Xenon can be made to react with fluorine gas to produce xenon tetrafluoride. If 15.90 g of xenon is used, what mass of fluorine, in g, is needed to react completely with the xenon?

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Chemistry Biochemistry Organic Chemistry

05/20/20