03/21/18

Salicylic+acetic anhydride gives aspirin+acetic acid.Find the percentage yield if 0.85grames of aspirin is formed in the reaction of 1g of Salicylic acid is
sarvani please send the answer as much as faster as you can this answer saves my life and changes my day.I will be very thank full to them how helped in answeringredients this question.           ... more
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03/21/18

If 4 moles of aluminum bromide reacts with 6 moles of potassium sulfate, how many moles of potassium bromide will be produced?
 Aluminum bromide and potassium sulfate react to form potassium bromide and aluminum sulfate.    
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03/21/18

im trying to create a ratio between 2 parts in a liquid. i have a pre mix of 80/20 for 80ml and want to add 20ml of the 20% part. what ratio will this leave me?
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03/21/18

what would be the effect on mole ratio of fe and cu if the iron are not 100% pure?
reaction between fe and cu. based on its mole ratio
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03/20/18

Does 60 have one significant digit or two?
 This is for physics
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03/20/18

However, at this point, the 2 ____________ molecules are reduced, freeing NAD⁺ to return to the glycolytic pathway.
During this process, glycolysis proceeds as normal with glucose splitting into 2 ____________ molecules, which are then phosphorylated into 2 BPG molecules, and finally converted into 2... more
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03/20/18

In the equation above, is Al a reactant or product?
2Al+3CuO---Al2O3+3Cu  
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03/20/18

Genes are made from DNA.
i just wanted to know if these are true or false and that is all so if yall could please help me that would be great 
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03/20/18

During the action of 5.2 grams of dicarboxylic acid with sodium forms 1.12 liters of hydrogen gas. Determine the formula of dicarboxylic acid.
We can use a help CnH2n(COOH)2
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03/20/18

Choose the best estimate for the mass of a can of soup 300g or 300mg or 34kg
Answer please?
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03/20/18

compare and contrast how NH3 and Ca(OH)2 form OH- ions in water.
NH3 and Ca(OH)2 form OH- ions in water  
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03/20/18

In this Acid and Base identification and neutralisation reaction, what would be the independent, dependent and controlled variables?
1. Place 5ml of unknown “A” into a test tube and place in the test tube rack. 2. Place 5 drops of universal indicator into unknown “A”. 3. Observe the colour change and using the pH scale... more
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03/20/18

Chemistry: gas equations, mole, volume and pressure
A sample of O2 with a pressure of 220mmHg contains 2.0 moles of gas and has a volume of 4.0L. What will the new pressure be when the volume expands to 5.0L and 3.0 moles of He is added while... more
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03/19/18

water that contains ca2+
Water containing Ca2+ and Mg2+ ions is called hard water and is unsuitable for some household and industrial use because these ions react with soap to form insoluble salts. One way to remove the... more
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03/19/18

In the reaction of Nitrogen gas with hydrogen gas to form ammonia gas, how many grams of hydrogen are needed to produce 1.80 grams of ammonia
N2+3H2 -> 2NH3
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03/19/18

Equilibrium constant
The value of Kc for the following reaction is 0.490 at 429K. N2O4(g)->2NO2(g)If a reaction vessel at that temperature initially contains 0.0400M NO2 and 0.0400M N2O4 What is the concentration of... more
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03/19/18

What mass of iron (III) fluoride is contained in 61.5mL of a 9.76M solution?
 what will be the mass
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03/19/18

1.19 gm of SOCl2 is added up in 100ml H2O.Find molarity of H+ in the solution such obtained.(assume 100% dissociation of acids formed).
JEE main rank enhancer
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03/19/18

Species only exist in animals.
Species only exist in animals.
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03/19/18

The molality of ch3coo- if 1 mole of ch3coo- is dissolved in 1 litre if amonia solvent density of nh3 solvent is 0.617gm/m
JEE main rank enhancer question  
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03/19/18

are atoms small, sold particles
are atoms small and solid particles?
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03/19/18

what is the difference between saturated and unsaturated hydrocarbon
please help me i am unable to get the solution
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03/18/18

What is the pressure of H2 gas produced?
A 20.8 G sample of nickel(s) is placed in excess HCl(aq) and the gas produced is collected over water in a 2.5L container. The vapor pressure is 21.1 mmhg at 23 degrees C. After the reaction is... more
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03/18/18

What mass of ammonia could we make from 100.0 grams each of N2 and H2?
What mass of ammonia could we make from 100.0 grams each of N2 and H2?
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03/18/18

What number is five more than 6?
Math activity
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