William G.

04/05/23

What is the concentration of the NaOH?

Suppose you wanted to standardize some NaOH solution but discovered that you were out of sulfamic acid. You managed to find a bottle of oxalic acid dihydrate and decided to use it as the primary... more

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Chemistry

04/04/23

The endpoint was reached after the addition of 15.35 mL of the standard solution. What is the concentration of the original sulfuric acid solution?

A chemist needs to determine the concentration of a sulfuric acid solution by titration with a standard sodium hydroxide solution. He has a 0.1155 M0.1155 M standard sodium hydroxide solution. He... more

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Chemistry

04/04/23

Payment error with chemistry session

Hello! My name is Emma Cusano. I am new to using the Wyzant app. I have had a good experience so far. However, yesterday I had a session with a tutor and our session was 1hr and 5mins. I was... more

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Chemistry

09/18/21

Consider the following reaction: 2 A (aq) + B (aq) ⇌ C (aq) + D (aq) what is the equilibrium concentration (in M) of D?

Consider the following reaction:2 A (aq) + B (aq) ⇌ C (aq) + D (aq)If the Kc for this equilibrium reaction is 44.9, and the equilibrium concentrations of A, B, and C are: [A] = 0.772 M, [B] =... more

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Chemistry

04/22/21

0.500 L of 0.325 mol/L AgNO3 solution reacts with 2.00 g of solid Zinc in a beaker 2AgNO3(aq) + Zn 🡺 2 Ag(s) + Zn(NO3)2( aq ) assuming yield is 80% what is mass of Ag produced

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Chemistry

04/22/21

a 525mL gas is collected at 785mmHg. What volume does this gas occupy at 745mmHg?

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Chemistry

02/10/21

How many molecules are in

How many molecules are in 7.9x10-18 moles of CO2?

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Chemistry

04/01/20

how many moles of AG will be produced from 46 g of CU assuming AGNO3 is available in excess

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Chemistry

03/31/20

Calculate the molar solubility of Al(OH)3

Calculate the molar solubility of Al(OH)3. The Ksp = 2.0 x 10-32I can’t seem to find the right answer no matter how I try it. When I work this out I get:Al(OH)3 —> Al + 3 OHKsp = [Al] [OH]3[Al]... more

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Chemistry

02/08/20

how do i solve this problem

MnS(s)+2HCl(aq)⟶MnCl2(aq)+H2S(g)If the small amount of MnS is combined with the small amount of HCl, what is the mass of the products? The mass of any excess reactants will also be included in... more

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Chemistry

02/05/20

Need help with this chem question!

Jacy bought a gold necklace weighing 21.3 grams from a flea market. She filled a 10mL graduated cylinder with water to the 5.0mL mark and dropped her necklace in. The level in the graduated... more

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Chemistry

10/05/19

Basic doubts of chemestry

Can we round off in chemestry problems

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Math Geometry

10/05/19

Finding demension

A room has dimensions 10’6” by 14’what is the perimeter of the room?

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Trigonometry Maths

09/05/19

can someone help me find the radius of the circle

What is the radius of the circle 2x2 + 2y2− 8x + 12y+ 15 = 0 ?I'd really appreciate the help I get the square root of 11/2 but the answer says it's wrong?

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