04/21/21

chemistry help!
what is the boiling point of a solution of .75 mol of KBr in 1.0 kg of water?
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04/13/21

product of butyric acid + p2o5 and heat

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04/13/21

Ethyl Benzoate plus water and heat

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04/10/21

How do you solve for volume to volume conversions and empirical formula?
What is the empirical formula of a compound containing 60.0% sulfur and 40.0% oxygen by mass?
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04/10/21

Find the volume in milliliters of 4.00 mol of an ideal gas at 34°C and a pressure of 1120 torr.

Find the volume in milliliters of 4.00 mol of an ideal gas at 34°C and a pressure of 1120 torr. Use the ideal gas law and the appropriate R value: R = 0.0821 atm • L/mol • KR = 8.31 kPa • L/mol •... more
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04/09/21

How many moles NaCl are there in 5.36 x 1023 formula units NaCl?
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04/09/21

How many moles CO2 are there in 34.8 L CO2 at STP?
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04/09/21

how many mol of N2 gas will occupy a 5.56-L container at STP
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04/09/21

express 690. torr in units of atm. Enter your answer in the provided box ___atm
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04/09/21

express 628 mm Hg in units of atm. Enter your answer in the provided box ___
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04/09/21

chem question help pls
Ammonia reacts with oxygen to make nitrogen gas and water. What is the coefficient in front of water in the balanced chemical equation?
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04/06/21

Stoichiometry unit
In the reactionMg (s)   +   O2 (g)    →   MgO (s),how many moles of oxygen are needed to produce 4.00 moles of magnesium oxide?
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04/03/21

Ammonia (NH3) clouds are present around some planets. Calculate the number of grams of ammonia produced by the reaction of 5.4 g of hydrogen with an excess of nitrogen. N2 + 3 H2 ->2 NH3
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04/02/21

Organic Chemistry 12U

Hi! I need help with this question..Draw the protein strand below as a structural diagram. Highlight the peptide linkage.- Lys - Tyr - Met - Val - Gly -
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04/02/21

chem question help 22-2
How many moles of hydrogen carbonate need to decompose to produce 8.26 x 1023 molecules of carbon dioxide if water is the only other product? Give your answer in scientific notation.
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07/29/20

Given the standard enthalpy changes for the following two reactions
Given the standard enthalpy changes for the following two reactions:(1) 2C(s) + 2H2(g)C2H4(g)...... ΔH° = 52.3 kJ(2) 2C(s) + 3H2(g)C2H6(g)......ΔH° = -84.7 kJwhat is the standard enthalpy change... more
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07/14/20

Consider this aqueous reaction. HNO3(aq)+Ba(OH)2(aq)⟶ What is the formula for the salt that forms?
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07/06/20

What are the structural formula?
• 3-ethyl-2-pentanol•decanoic acid•pi-dichlorobenzene•methyl propanoate•2,3-pentanedione
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07/05/20

Condensed Structural diagram
Draw a condensed structural diagram for:-5,6,7- triethyl-4-methyl-nonene-3-methyl-4,4-dipropyl-1-octyne
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07/01/20

How many mol of N2 gas will occupy a 4.01-L container at STP?
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07/01/20

Calculate the number of mol of helium in a 2.21-L balloon at 25C and 2.64 atm of pressure
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07/01/20

What is the volume of 88.8g of carbon monoxide at STP
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07/01/20

A gas mixture has three components: N2, F2 and He. Their partial pressures are 0.60 atm, 0.16 atm, and 0.18 atm. What is the pressure of the gas mixture?
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07/01/20

A sample of nitrogen gas has a volume of 2.59 L at 21 degrees Celsius. What volume will it occupy at 98C if the pressure and number of mol are constant?

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07/01/20

sample of oxygen, at 24 C, occupies a volume of 5.15 x 102 mL at 1.50atm pressure. What pressure must be applied to compress the gas to a volume of 1.22x10^2 mL, with no temperature change?
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