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Chemistry

06/20/23

The mileage for a motorcycle with a fuel tank capacity of 22L is 35mi/gal how long a trip in kilometers can be made on full tank of gas

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Chemistry

06/20/23

The mileage for a motorcycle with a fuel tank capacity of 22L is 35mi/gal how long a trip in kilometers can be made on full tank of gas

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Chemistry Organic Chemistry

06/19/23

Complete and balance the following redox reaction in basic solution:

Complete and balance the following redox reaction in basic solution: 7O3-(aq) + Re(s) ===> ReO4-(aq) + IO-(aq)Thanks!

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Chemistry

06/19/23

Why can't I take 3s2 more stable than 3p4?

Outermost electronic configuration of 4 elements A, B, C, D A-3s2, B-3s23p1, C-3s23p3, D-3s23p4 Correct order of 1st ionization enthalpy (a) B > A > C > D (b) D > C > B > A (c) C... more

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Chemistry

06/18/23

what type of reaction happens when you mix sodium thiosulphate solution and hydrochloric acid?

please help

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Chemistry

06/18/23

Calculate the volume of nitric acid (65%, density=1.40g/cm3) and how cm3 H2O need to added 500cm3 solution 0.2mol/dm3.Calculate the quantitative participation(Xa=nA/nA+nB) of the initial solution.

I need a quick response!Thanks for your attention.

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Chemistry

06/18/23

Urgent Chemistry Question!!!!!!

Spattering did occur and some of the sample was lost onto the laboratory bench. As a result of this error the reported magnesium to oxygen ratio will be ___________A) unaffectedB) too lowC) too high

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Chemistry

06/17/23

Chemistry question =----

Rubidium has two naturally occurring isotopes. The weight average atomic mass of Rb is 85.4678 u. If 72.15% of Rb is found as Rb-85 (84.9117 u), what is the mass of the other isotope?a. 0.5657 ub.... more

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Chemistry Math Algebra 1

06/16/23

how many ml of 50% acid should be added to 100% acid to get 20 ml of 70% acid

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Chemistry

06/16/23

Why is the Ionization energy directly proportional to the penetrating power?

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Chemistry

06/16/23

I have a doubt-

Why is the ionization energy required for Cl- more than F-? Can't we say that the nucleus of Cl- will be far from the valence e-, so the energy required should be less than that of F- as the... more

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Chemistry

06/15/23

In a configuration, say, Cl : [Ne] 3s² 3p⁵ How to write the Valence shell and the penultimate shell?

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Chemistry Organic Chemistry

06/15/23

calculate ΔH° for the equation

HNO 3 (aq) ΔH°f = –207 kJ/molMg(OH) 2 (s) ΔH°f = –925 kJ/molMg(NO 3 ) 2 (aq) ΔH°f = –875 kJ/molH 2 O(l) ΔH°f = –285.8 kJ/mol(a) Given the ΔH°f values above, calculate ΔH° for the equation below (5... more

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Chemistry Organic Chemistry

06/15/23

find the enthalpy change

Use equations (1), (2), and (3) to find the enthalpy change for the formation of methane, CH 4 , fromchloroform, CHCl 3 . CHCl 3 (l) + 3HCl(g) → CH 4 (g) + 3Cl 2 (g)(1) 1/2 H 2 (g) + 1/2 Cl 2 (g) →... more

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Chemistry Organic Chemistry

06/15/23

Determine the ∆��rxn for the neutralization and write a thermochemical equation for the reaction.

A chemist mixes 25.0 ml of 1.0 mol/L diprotic acid H2X (aq) with 50 ml.0 of 1.0 mol/L NaOH(aq) in acoffee cup calorimeter. Both solutions are initially at 25.0℃. The temperature stabilizes to 33.9... more

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Chemistry Organic Chemistry

06/15/23

calculate the specific heat capacity of thallium

A calorimeter designed to have negligible heat loss is used to determine the specific heat capacity ofmetals. A piece of thallium having a mass of 111.2 g is warmed to 95.0ºC and placed into the... more

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Chemistry

06/15/23

How to find out the resulting weight of an acid and metal carbonate reaction?

If I reacted 66ml of 0.18M HCl with 1g of baking soda, the stoichiometry ratio should be around 1:1.I want to know how much CO2 is produced in the reaction (to find out the remaining weight of... more

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Chemistry

06/15/23

Chemistry advanced

The warm water (released/absorbed) heat while the ice (released/absorbed) heat .

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Chemistry Math Algebra 1 Calculus

06/14/23

The revenue R from the sale of x cameras is given by R=68x−x2. The cost C of producing x cameras is given by C=90+49x. How many cameras must be produced and sold in order to break even?

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Chemistry

06/14/23

Can someone Double check my work on the ones that are Bold please and thank you

1. Now you will mass out a sample of the sodium bicarbonate. You will need to open the bottle by pointing at the lid and it will say Remove Lid. Next, grab the scoop and drag it to... more

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Chemistry Biochemistry Organic Chemistry Chemical Engineering

06/14/23