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chemistry
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How would you write the chemical equation for sodium nitrate + isopropyl alcohol.
So it would be NANO3 (aq) + C3H8O (aq) -> But
2 answers
asked by
emily
520 views
explain why benzoic acid do not affect litmus paper
2 answers
asked by
john oche
602 views
How to prove that sodium hydroxide is a base with the help of an equation for the reaction
1 answer
asked by
Anonymous
400 views
when 1.00kg of copper reacts, 3.12kg of silver is recovered. what is the percentage yield?
1 answer
asked by
janessa
414 views
the density of a gas at N.T.P is 1.40grams per litre. The molecular weight of gas is
4 answers
asked by
Abhi
1,318 views
A BALANCED CHEMICAL EQUATION BTW IRON (Fe3+) and NaOH.
4 answers
asked by
Saddik
6,659 views
What is the energy of electron 4th exicted state of of be3+ ion if energy of electron in ground state
1 answer
asked by
shivraj singh
390 views
Briefly explain how the neutrons were discovered.
1 answer
asked by
Abdul
426 views
what are the electrolytes in ORS?
1 answer
asked by
David
316 views
130cm3 of a gas excarts a pressure 750mmhg . calculate it pressure if its volume is increase to 150cm3 at 35oc
3 answers
asked by
whiskey
811 views
a sample of nitrogen gas occupies a volume of 20cm3 at 500k and 760mmhg what will it volume be at 860mmhg 400k
2 answers
asked by
whiskey
511 views
a stp a cartain mass of gas occupies a volume of 790cm3 find the tempreture at which the gas occupies 1000cm3 and has a pressure
2 answers
asked by
whiskey
662 views
you have 20ml of an aqueous solution of 0.2M NaOH. if you add distilled water to this solution until you have 200ml , what will
3 answers
asked by
katlego
524 views
Asprin, C9H8O4, is prepared by reacting salicylic acid, C7H6O3, with acetic anhydride, C4H6O3.
The other product is acetic acid
3 answers
asked by
red
887 views
If the boiling point temperature of a particular liquid (water)is different from 100degreecelcius.what is likely to be the
3 answers
asked by
mintah
427 views
How much volume of ethane
would be required to produce 1.12 dm 3 of carbon (IV) oxide on combustion in sufficient oxygen?
4 answers
asked by
Marcellina
909 views
how is rubbing alcohol a homogenous mixture ??
3 answers
asked by
Sabrina
1,685 views
How many sig figs do i write down for this: (2.06/5.999)+156.5?
3 answers
asked by
homework
449 views
this is a C1V1=C2V2 type question:
if a container has 100ml of 1.5M Br, what is the concentration in that container?
1 answer
asked by
homework
326 views
A particle has a velocity that is 92% of the speed of light. If the wavelength of the particle is 1.55×10-15 m, calculate the
2 answers
asked by
Anonymous
540 views
A particle has a velocity that is 92% of the speed of light. If the wavelength of the particle is 1.55×10-15 m, calculate the
2 answers
asked by
Anonymous
1,225 views
28cm3 of 0.2mol of sodium hydroxide was titrated against 25cm3 of hydrochloric acid using methyl orange as indicator, calculate
2 answers
asked by
rukayya
513 views
If a container is heated with CaCO3, the compound decomposes into CaO and CO2. If the container and CaCO3 originally weigh
1 answer
asked by
homework
389 views
Calculate the PH and POH of an aqueous solution that is 25.00% of HCL by mass and density of 1.35g/no
3 answers
asked by
okore
764 views
Calculate the PH and POH of an aqueous solution that is 25.00% of HCL by mass and density of 1.35g/ml
1 answer
asked by
okore
439 views
Phosgene is a potent chemical warfare agent that is now outlawed by international agreement. It decomposes by the reaction
3 answers
asked by
Emem
1,393 views
What volume of 0.15 mom hclis required to neutralize 25ml of 0.12molar ba(oh)2 solution?
2 answers
asked by
srinidhi
599 views
Air consists of 21 % oxygen, 78 % nitrogen and 1 % argon by volume. Calculate:
* (a) the partial pressures in Pa, if total
2 answers
asked by
S
1,061 views
The normal boiling point of liquid butanol is 391 K. Assuming that its molar heat of vaporization is constant at 45.9 kJ/mol,
3 answers
asked by
Anonymous
2,120 views
DOES NO-3 VIOLATES OCTET RULE ?
2 answers
asked by
Anonymous
1,199 views
Does N2O violates the octet rule?
2 answers
asked by
Anonymous
615 views
Does N2O violates the octet rule?
2 answers
asked by
Anonymous
919 views
determine the number of grams of Ne gas that must be added to a container in order for the volume to increase to 38.2 L at
3 answers
asked by
j
473 views
. Classify the reaction between zinc and acetic acid and explain, in general terms, what happens during this type of reaction.
wo
1 answer
asked by
help please
666 views
Classify the reaction between zinc and acetic acid and explain, in general terms, what happens during this type of reaction.
woul
3 answers
asked by
help please
2,316 views
Do you think that there is a high correlation between proficiency in mathematics and proficiency in chemistry? Explain why or
2 answers
asked by
help please
620 views
How to find delta H using calorimetry?? I know the answer but I m having trouble getting there!?
5.5 grams of C2H6 are burned in
1 answer
asked by
homework
398 views
2gm of a mixture of na2co3 and nahco3 on heating to a constant weight gave 224ml of co2 stp. Calculate the percentage of na2co3
6 answers
asked by
Raj Aryan
1,182 views
35.8g of a mixture of potassium chloride and potassium trioxochlorate(v), we're heated to a constant mass. If the residue weighs
4 answers
asked by
Anu
2,160 views
For 2SO2(g)+O2(g)⇌2SO3(g),
Kp=3.0×104 at 700 K. In a 2.00-L vessel the equilibrium mixture contains 1.15 g of SO3 and 0.107 g
5 answers
asked by
whateva
3,413 views
Commercial aqueous hydrogen peroxide was diluted 150 times. 25cm3 of the sample solution was titrated with 0.02molar KMnO4 and
2 answers
asked by
Sarah
626 views
calculate the ph of half cell Pt,H2|H2SO4, if its electrode potential is 0.03V
5 answers
asked by
shambhawi
3,345 views
The density of Al is 2.7g/cm3. Express the density of Al in Kg/m cubed
3 answers
asked by
susan
353 views
In the titration of Na2S2O3 against KIO3 the average titre value was 23.1cm3,the volume of iodine used in the titration was
5 answers
asked by
Sarah
1,599 views
Which of the following would for a buffer if added to 250.0 mL of .150 M SnF2?
a).100 mol HCl b).060 mol HCl c).040 mol HCl
3 answers
asked by
homework
651 views
What is the pH of a buffer solution that is prepared by treating 600.0 mL of 1.5 M sodium acetate with 240.0 mL of 0.25 M HCl?
I
1 answer
asked by
homework
358 views
When 3,3-dimethyl-2-butanone is reduced, the product is
a. 3,3-dimethyl-2-butanene b. 3,3-dimethyl-2-butana
3 answers
asked by
kelly
1,258 views
What reagent is commonly used for alcohol oxidation?
a. Na2Cr2O7 b.Benedict's Solution c.H2SO4 d. Tollen's Reagent
1 answer
asked by
paul
601 views
what is the condensed formula for the product of the hydrogenation of 2-butene using a palladium catalyst?
3 answers
asked by
paul
977 views
How do I know if this is spontaneous at 25 celsius and show work?
PbCl2 --->(equilibrium)--->Pb2+ + 2Cl- a) when Pb2+=1M and
2 answers
asked by
homework
478 views
what is the structure of a saturated molecule with 6 carbons and only hydrogens?
Would it just be 6 carbons in a row then
2 answers
asked by
Anonymous
628 views
If 3.30 mL of vinegar needs 42.5 mL of 0.150 M NaOH to reach the equivalence point in a titration, how many grams of acetic acid
4 answers
asked by
Anonymous
767 views
If 22 mL of 5.0 M H2SO4 was spilled, what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid?
2 answers
asked by
Anonymous
660 views
find the limiting reagent for each set of reactants 4NH3(g) +3O2(g) = 2N2(g) + 6H2O(l) if you have 7.00 mol NH3 + 5.00 mol O2
3 answers
asked by
Cat
821 views
61.8g of A combines with 80g of B.30.9g of A combines with 106.5g of C, B and C combine to form compound CB2.atomic weight of C
3 answers
asked by
Animesh swain
1,852 views
What would the concentration be of 2ml of feed into 750ml instead of 1000ml
1 answer
asked by
tony
366 views
Fluorine gas can react with ammonia gas to produce dinitrogen tetrafluoride gas and hydrogen fluoride gas. This reaction is
4 answers
asked by
chelsie
2,027 views
Study the reaction.
A(s) + 2BC(aq) →AC2(aq) + B2(g) ΔH = −92.0 kJ/mol Which change would increase the rate of the forward
3 answers
asked by
madison
661 views
Examine the unbalanced electrolytic reaction.
Li+(aq) + Zn(s) → Li(s) + Zn2+(aq) How many electrons are transferred in the
3 answers
asked by
madison
667 views
industrial use of sodium carbonate
1 answer
asked by
greggory
292 views
60 cm of hydrogen diffused through a porous membrane in 10 minutes. The same volume of gas G diffused through the same membrane
1 answer
asked by
obeleze
482 views
A 0.509 g sample pure platinum metal was reacted with hcl to form 0.889 g of a compound containing only platinum and chlorine?
4 answers
asked by
Sofia
1,993 views
30cm³ of 0.1 M AI(NO3)3 solution is reacted with100cm³ of 0.15M of NaOH solution. Which is in excess and by how much?
A. NaOH
3 answers
asked by
Mordu
852 views
sodium metal reacts with hydrogen gas to yield solid sodium hydride ( NaH ). A reaction mixture contains 10.00 g sodium metal
4 answers
asked by
Sofia
1,892 views
consider the balanced chemical equation 2H2O2 ---> 2H2) + )O2
A) given 20.0 g of H2O2 how many grams of water will be produced?
3 answers
asked by
Sofia
747 views
What volume of 0.1M Of sulphuric acid is needed to neutralize 100cm³ of a solution of sodium carbonate of mass concentration
1 answer
asked by
Denis
484 views
1. How many kilograms are equal to 1500 centigrams?
2. Determine the number of liters in 6578 milliliters? 3. How many decimeters
2 answers
asked by
anonymous
580 views
1. the diameter of a carbon atom is 0.000 000 000 000 154 m. what is the number expressed in the scientific notation?
a)
7 answers
asked by
david
859 views
1. the diameter of a carbon atom is 0.000 000 000 000 154 m. what is the number expressed in the scientific notation?
a)
2 answers
asked by
david
1,168 views
Calculate the amount of heat required to heat a 3.5 kg gold bar from 21 degrees C to 37 degrees C. What would be the best way to
2 answers
asked by
Raene
550 views
Calculate the amount of heat required to heat a 3.5 kg gold bar from 21 degrees C to 37 degrees C. What would be the best way to
2 answers
asked by
Raene
1,148 views
Calculate the mass of salt needed to prepare 100 cm3
of 0.05 M solution of: (i) Fe(NH4)2(SO4)2.6H2O (ii) FeNH4(SO4)2.12H2O
4 answers
asked by
sheetal
982 views
how you prepare a solution of 600ml of 0.085M K2so4
3 answers
asked by
sibongiseni
583 views
Describe how you would prepare 0.5N sulphuric acid in 500mls specific gravity 1.84,percent purity 98
3 answers
asked by
mercy
3,115 views
How much heat is gained (in Joules) by the water where a chemical reaction takes place in 100 mL aqueous solution and has a
2 answers
asked by
trin
889 views
Calculate the PH of unbuffered solution after adding 1ml of 0.1M NaOH to 100ml of the solution .PH of unbuffered solution 4.74
2 answers
asked by
Marshet
538 views
Zn + 2HCl ---> ZnCl2 + H2(g)
What mass of zinc is needed to produce 115 mL of hydrogen? t's given 115 mL of hydrogen, so can
7 answers
asked by
Shine bright shine far
2,995 views
Convert the following moles into masses
2.00 moles of N2 n=14g 2 x 14 =28 2.00mols x 28 = 56 mols
3 answers
asked by
Shine bright shine far
390 views
How many molecules are present in 1.5 moles of NaCl?
na =23.0 cl=35.5 23.0 +35.5 = 58.5g 1.5mol x 58.5/1mol = 85.75
4 answers
asked by
Shine bright shine far
1,377 views
I need help I'm confused
Complete the following reactions HNO3 + Sr(OH)2 ---->
4 answers
asked by
Shine bright shine far
349 views
Please check
Complete the following reactions HNO3 + Sr(OH)2 --> C6H4(OH)2 + O2 --> my answers 2HNO3 + Sr(OH)2 --> Sr(NO3)2 +
4 answers
asked by
Shine bright shine far
639 views
A mixture of 0.2mole of alcohol A and 0.5mole of alcohol has a total vapour pressure of 40mmHg at 298k,if the mixture obey's
2 answers
asked by
Smile
763 views
the value of pkw at 25c is
3 answers
asked by
Bassel Ejel
812 views
CuSO4 + K3Fe(CN)6 = FeSO4 + K3Cu(CN)6
What is the color of 1. K3Fe(CN)6? 2. K3Cu(CN)6?
1 answer
asked by
poppy
359 views
25.0cm3 of a solution containing 2.0g of NaOH per 250cm3 of a solution of H2SO4 for complete neutralization. Calculate the
3 answers
asked by
poppy
449 views
What volume of a 2.70 M KI stock solution would you use to make 0.375 L of a 1.25 M KI solution
1 answer
asked by
alex
274 views
Chemist needs a buffer with pH of 4.5.
how many milliliters of pure CH3COOH (density;1.049g/ml) must be added to 500ml of 0.1M
4 answers
asked by
Heston
934 views
A gas occupies a volume of 150cm3 at 25degree celcius and the pressure of 80cm hg.
what will be the volume of the gas if the
4 answers
asked by
poppy👌🤔
495 views
0.050 mole of gas was collected in the lab at a temperature of 22.0 degrees celsius and a pressure of 0.987 atm. what volume
1 answer
asked by
Daniel
419 views
Which of The following statement is not correct about cathode rays.
Emerge at right angles to the cathode Travel in straight
1 answer
asked by
poppy👌🤔
386 views
if 158g of a gas at stp occupies a volume of 50.00dm^3.
what is the relative moat mass of the gas? (G M V at stp =22.4dm ^3 mold
1 answer
asked by
poppy👌🤔
403 views
158g of a gas at stp occupies a volume of 50.00dm^3 ..what is the relative moat mass of the gas?
(G M V at stp =22.4dm ^3 mold )
2 answers
asked by
poppy👌🤔
529 views
the label of a bottle of NaOH bears the following of 46.7% and density of 1.57gml
calculate the molar concentration of it?
4 answers
asked by
stephen
386 views
what are the distinct characteristic does radiocarbons depends on?
4 answers
asked by
stephen
344 views
given that 5milimeter of 5.2mol per liter NaCl will be used to prepare 0.026mol per liter NaCl, describe how you will prepare
3 answers
asked by
stephen
508 views
what volume (in litres) of 17.6M NaOH will be used to prepare 0.5M NaOH in 50,000ml?
2 answers
asked by
stephen
483 views
an arcaecologist recovered wood with a specific activity of 8.61d/min.g, assume the ratio of 12C/14C in a living plant has the
4 answers
asked by
stephen
432 views
state two mathematical expression for Raoult's law
5 answers
asked by
stephen
595 views
in one sentence,explain why Bf3 with incomplete octet structure is the preferred structure?
4 answers
asked by
samuel
1,451 views
write the solubility product constant expression for the following
I) silver ethanediote II) silver carbonate III) lead
3 answers
asked by
josh
804 views
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