31 Answered Questions for the topic Chemisty

Chemisty

11/21/19

How many moles of CCL4 are there in 56 g
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Chemisty

01/31/19

If a person was using 1.1 mol of fluorine, how many mol of sodium fluoride could they produce from this balanced equation?
If a person was using 1.1 mol of fluorine, how many mol of sodium fluoride could they produce from this balanced equation?
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Chemisty

10/04/18

Chemistry Homework Please Help
Please if someone could please help me figure this out I would be so greatful I have been stuck on this problem for a few days and I cant get it I have to show all work for my answer.    300 mL... more
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Chemisty

09/16/18

Find the density of liquid A.
An empty bottle has a mass of 30.5g. When this bottle is completely filled with water it has a mass of 65.6g. When this bottle was filled with another liquid A, it has a total mass of 50.5g. Find... more
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Chemisty

08/23/18

How many mols of hexane are there in 5 mL if the density, d, of hexane is 0.655 g/mL and the molecular weight is 86.18 g/mol?
How many mols of hexane are there in 5 mL if the density, d, of hexane is 0.655 g/mL and the molecular weight is 86.18 g/mol?
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Chemisty

05/18/18

balance equation and what type of reaction this is
____Ca(NO3)2+____NaOH=____Ca(OH)2+NaNO3   ____Mg(NO3)2+____K3PO4=Mg3(PO4)2+____KNO3
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Chemisty

05/18/18

ZnBr2+Al=Zn+ABr3
please balance the equation
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Chemisty

05/10/18

A certain reaction has an activation energy of 52.50 kJ/mol. At what Kelvin temperature will the reaction proceed 7.50 times faster than it did at 295 K?
please help
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Chemisty Chem

04/25/18

calculate the molarity of 1270g of K2PO4 in 4.0 L aqueous solution
i do not know how to d0 it at all help
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Chemisty

04/09/18

what is the molarity in 650.ml of solution containing 63 grams of NaCl?
i dont know how to do it can you guys please help me 
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Chemisty

01/03/18

how do you write a balanced equation for the chemical reaction water plus gaseous dinitrogen trioxide yield a solution of nitrous acid.
write the balanced equation and indicate the physical states where they are indicated
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12/06/17

How to modify prepared Seawater chemistry so that Mg/Ca ratio = 1?
I prepared 1 liter of artificial sea water by mixing 1 liter of pure water and 35 grams of "Instant Ocean" salt. According to the recipe, salinity = 35000 ppm, Magnesium (Mg) = 1320 ppm and Calcium... more
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Chemisty

11/29/17

what atomic subshells may be found in the representative elements? also known as the group A elements
i need it for the chemisrt worksheet that were doing in class.
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Chemisty

11/12/17

In the chemical reactions of iron and sulfur, A. How many miles of sulfur are needed to react with 1.42 moles of iron? B. How many moles of iron ...continue bel
In the chemical reactions of iron and sulfur,A. How many miles of sulfur are needed to react with 1.42 moles of iron?B. How many moles of iron are needed to react with 2.75 moles of sulfur?Name the... more
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Chemisty

10/12/17

stiochiometry
chlorine is purpose on large scalate by the electrolysis of aqus sodium chloride solution .caculate the mass of nacl required to produced 100gm cl?
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Chemisty Chemistry Lab

10/05/17

Percent Composition
Calculate the percent composition of each element, by mass, in Na2CO3*10H2O
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09/14/17

i walk at a speed of 4.50 ft/second, how many hours would it take me to travel 8.00x10^15 picometers?
I got 1.62 hours is the right ?
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Chemisty

08/16/17

gives the most energy
Which of the following reactions involves investing the most amount of energy?A- (g) → A (g)A (g) → A+ (g)A+ (g) → A+2 (g)A+2 (g) → A+3 (g)
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07/27/17

i need help with this question
When 27.98 g of hydrated tin (II) chloride was heated up, 18.97 g of the anhydrous salt was left. how do you Determine the formula of the hydrated salt.
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05/18/17

why are fusion reactions not currently used to produce energy,
especially as they are a "clean" form of energy that does not create radioactive or nuclear byproducts?
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Chemisty Physical Science

12/18/16

Mass describes: a. an object's size b.the amount of matter in an object c.the type of element in an object
This is from an 8th grade book.
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Chemisty

09/08/16

If my camel has to stop every 1100 yards and if he has to travel 175 miles how many time will it need to stop for water
it's chemistry and I don't get this question I need some help please and thank you greatly appreciated
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Chemisty

04/20/16

Draw the electron dot formula for The molecule of CHCl3 . How many nonbonding electron pairs and bonding electron pairs are in the molecule of CHCl3?
Draw the electron dot formula for The molecule of CHCl3 . How many nonbonding electron pairs and bonding electron pairs are in the molecule of CHCl3?A) 9 nonbonding electron pairs and 4 bonding... more
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03/07/16

Having major trouble with this... Question is down below please show work and answer thanks!
Question #1 In a titration 23.46 ml of 0.00325 M Ba(OH)2 neutralized 13.8 ml of HCL solution. What is the molarity of the HCl solution? Answer in units of M     Question #2  Find the molarity... more
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02/08/16

skeletal equation of carboxylic reactions
Write a skeletal equation for the reaction of ethanoyl chloride with phenyl amine (represented as R-NH2). What is the chemical term for the bond formed between the two reagents? What term might... more
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