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How many grams of sodium chloride are required to prepare 1.00 liter of a 1.00M NaCl solution?
1 answer
asked by
Lisa
406 views
What is the molarity of a calcium sulfate solution prepared by adding 27.89g of CaSo4 to sufficient water to make a final
1 answer
asked by
Lisa
432 views
What is the molarity of potassium iodide solution prepared by adding 5.810g of KI to sufficient water to make a final solution
2 answers
asked by
Lisa
569 views
How many grams of magnesium chloride are needed to prepare 100ml of a 0.325 M MgCl2 solution?
3 answers
asked by
Lisa
418 views
Mg(OH)2 + FeCl2 �¨Fe(OH)2 +MgCl2 how can balance this equation don't understand
3 answers
asked by
Lupe
586 views
If 7.60 kJ of heat is needed to raise the temperature of a sample of metal from 10.°C to 25°C, how many kilojoules of heat
2 answers
asked by
Faith (Pls Help) (Would Trully Appreciate it)
481 views
CALCULATE THE VOL OF 2.5MOL OF OXYGEN.
1 answer
asked by
CIRABEL
288 views
What would be the carbon containing product in this SN2 reaction?
CH3CH2-O(-) + CH3CH2CH2I -> Give the major product:
3 answers
asked by
Maura
367 views
a) Give the major elimination product derived from each of the following elimination reactions. Pay attention to stereochemistry
1 answer
asked by
Maura
637 views
How can I calculate a pH of hypochlorite buffer into LiCLO with only initial concentrations and no Ka value?
[CLO-]=.1M
4 answers
asked by
Martin
1,166 views
An isotope has a half life of 56 days. It now has 10,000DPM/ml. What will its activity be 100 days from now?
1 answer
asked by
Jared
314 views
FIND NO OF ELECTRONS IN IMOLE OF CH4
1 answer
asked by
Anonymous
269 views
How many liters of O2 will react with 100 liters of H2 according to the gas phase reaction: O2 + 2H2 ------2H2O
1 answer
asked by
MICHELLE
372 views
IF A 50.0 ML SAMPLE OF CALCIUM HYDROXIDE IS TITRATED WITH 25.0 ML OF 0.200M PHOSPHORIC ACID, WHAT IS THE MOLARITY OF THE BASE?
2 answers
asked by
SHANNA
500 views
If a 5.0L volume of O2 (g) is at 1.0 atm, if we hold the temperature and molar amount of O2 constant how many psi of pressure
1 answer
asked by
Kelly
292 views
given the overall cell reaction Zn(s) + 2Ag(aq) --> Zn2+ (aq) + 2 Ag(aq) which will occur when the cell operates
4 answers
asked by
BUDDY
1,344 views
How many kilojoules are released when 85.0g methanol is burned?
2 answers
asked by
Kim
501 views
how many moles of oxygen are present in 11.0 molecules of NaClO4?
AND HOW DO I WORK IT OUT
1 answer
asked by
JAMIE
387 views
joules to melt a 525g ice cube at 0∘C and to warm the liquid
2 answers
asked by
DEE
538 views
Can you please check my work? I got -4.3KJ/mol
If this is not right can you tell me what I am doing wrong? Thank you! Questions.
3 answers
asked by
Lauren
2,323 views
A particular reactant decomposes with a half-life of 139 seconds when its initial concentration is 0.342 M. The same reactant
1 answer
asked by
CHEM
499 views
A 0.229 mol sample of PCL5 is injected into an empty 3.20 L reaction vessel held at 250 degrees celsius. Calculate the
2 answers
asked by
Mer
866 views
In which of the following pairs of compounds are both members of the pair molecular compounds?
PCl3 and LiBr CCl4 and KOH NaH and
3 answers
asked by
layla
3,179 views
the number of nonbonding electrons exceeds the number of bonding electrons in the lewis structure of which of the following
2 answers
asked by
layla
1,040 views
which formula do i use to solve for the rate constant of a 2nd order half life?
5 answers
asked by
Anonymous
365 views
Can you show me the formula I need to do this problem. please
a solution is made by dissolving 0.35 mole of LiI in enough water
2 answers
asked by
julia
560 views
Calculate the potential at 25∘C for a cell that has the following ion concentrations: [Ag+] = 1.0×10−2M , 3.2×10−2M .
4 answers
asked by
EMILY
721 views
A balloon contains 3.3 liters of nitrogen gas at a temperature of 90K and a pressure of 101 kPa.
If the temperature of the gas is
3 answers
asked by
Brady
934 views
how many milliliters of a stock solution of 6.0 m hno3 would you have to use to prepare 110mL of 0.500 M HNO3?
4 answers
asked by
Ambra
4,935 views
a concentration-time study of the gas phase reaction a 2A3 -> 3A2 produced the data in the table below.
Time (s) [A3] (M) [A2]
3 answers
asked by
CHANTEL
1,979 views
Arrange the elements in decreasing order of the number of valence electrons
Br,S,Sb,Sr,F,Mg,I,Ca,Na,Kr,Xe,Bi,Ge,Ga,K
4 answers
asked by
M
3,820 views
Why is CH 4 nonpolar whereas CH 3 Cl is polar?
3 answers
asked by
M
4,673 views
Identify the class of compounds that contains each of the following functional groups.
a carbonyl group between two carbon atoms
2 answers
asked by
M
1,121 views
In the preparation of a rock salt solution, 1.522 grams of impure rock salt was dissolved in 50.0 ml of distilled water. The
2 answers
asked by
julia
574 views
What is the IUPAC name for the molecule shown here?
H I \ / C=C / \ I H
6 answers
asked by
M
1,782 views
H2C=C-C-C-CH3
THERE IS AN H ATTACHED TO THE CARBON AFTER THE FIRST BONG THEN A H2 ON THE 2ND AND 3RD CARBON
6 answers
asked by
M
630 views
A 1.000g mixture of As4S6(s) and As4S4(s) was burned in excess O2. The products were As4O6(s) and SO2(g). The solid product had
4 answers
asked by
ANN
1,605 views
calculate the molality of a solution formed by dissolving 27.8g of LiI in 500mL of water
4 answers
asked by
Anonymous
1,206 views
3 Liter of a gas is collected at 35 degrees celcius and 705 mmHg .what is the volume at STP?
2 answers
asked by
RTYU
876 views
How many moles of magnesium are needed to react with 16 g of O2?
2 MgO (s) + O2 (g) → 2 MgO (s)
4 answers
asked by
HAY
3,912 views
CaCO3 can be roasted to produce CaO ans CO2 this reaction is carried out in flask connected to an open end Mercury manometer the
3 answers
asked by
mow
1,320 views
1.) What is the correct net cell reaction for the electrochemical cell diagramed below?
Ni(s) ∣ Ni2+(aq) || Ag+(aq) ∣ Ag(s)
2 answers
asked by
Amber
572 views
Hydrogen peroxide (H2O2) is decomposed according to the following reaction:
2H2O2 (l) ¡÷ 2H2O (l) + O2 (g) If 6.00 g of
2 answers
asked by
CHAN
601 views
Consider the following reaction:
3Pb(NO3)2(aq) +Al2(SO4)3(aq) ¡÷ 3PbSO4(aq) + 2Al(NO3)3(aq) Determine the mass (in gram) of
3 answers
asked by
CHAN
1,719 views
At equilibrium at 1.0 L vessel contains 17.00
mol of H2, 20.00 mol of CO2, 13.00 mol of H2O, and 6.000 mol of CO at 427◦C.
2 answers
asked by
Kira
874 views
what is the mass percentage if you dissolve 0.659 mol of citric acid, C6H8O7, in 1.00 kg of water.
2 answers
asked by
BOB
473 views
Suppose 50.0 g NH3, 80.0 g CO2, and 2.00 mol H2O are reacted. Determine the
maximum grams of NH4HCO3 that can be produced.
3 answers
asked by
Dianne
1,272 views
A 2.50 L sample of neon gas at 0.00 C and 1.00 ATM is compressed into a 1.00 L cylinder. what pressure will the gas exert in the
2 answers
asked by
Dianne
1,074 views
An isotope has a half-life of 56 days. It now has 10,000 DPM/ml. What is the activity in the diluted specimen?
Very confused, any
3 answers
asked by
Kyle
442 views
You have a bottle of water. The water has a mass of 29 grams. You heat the water with 102 calories of heat and the final
2 answers
asked by
Anonymous
702 views
4. The decomposition of phosphine, a very toxic gas, forms phosphorus and hydrogen in the following reaction:
4PH3 (g) P4 (g) +
4 answers
asked by
N.Z
2,198 views
PLEASE HELP!
Two samples of sodium chloride were decomposed into their constituent elements. One sample produced 1.78 g of sodium
4 answers
asked by
Diana
781 views
Using mass percentages:-
The American Dental Association recommends that you should consume 3.0 mg of fluoride a day. If you get
2 answers
asked by
Mahnad
495 views
For a crystal with formula BaCl2.xH2O, a student conducted a gravity experiment and found out that 2.44 gram of this crystal can
3 answers
asked by
lizA
3,045 views
Consider the following mechanism:
STEP 1: A ---> B +C (slow) STEP 2: C+D ---> E (fast) OVERALL: A+D---> B+E Determine the rate
3 answers
asked by
Anna
1,638 views
I am lost. I have to create a buffer using NH4CL and 0.10 M NH3. I have to chose how much of the reagent to use in order to get
3 answers
asked by
Erica
538 views
am lost. I have to create a buffer using NH4CL and 0.10 M NH3. I have to chose how much of the reagent to use in order to get a
2 answers
asked by
Erica
525 views
How is molar absorptivity used to determine concentration from absorbance?
1 answer
asked by
Aiyanna
357 views
If 100g of NaOH are reacted with 85.00g H3PO4, how many grams of Na3PO4 can be made?
Make sure the final answer is in the correct
10 answers
asked by
tom
603 views
A 3.5g sample of potassium chloride(KCl)is dissolved in 10mL of water.The resulting solution is the added to 60mL of a 0.5M
3 answers
asked by
RUBY
774 views
Draw a potential energy diagram with appropriately labelled axes to represent:
a) The exothermic combustion of octane ∆Ho
3 answers
asked by
HAte Chemistry :(
964 views
Europium can have a 2+ or a 3+ charge. which one of the following below is not possible
1. EuSO4 2.Eu2(SO4)3 3.EuPO4 4.Eu(NO3)3
4 answers
asked by
SHORNORA
523 views
A reaction of 48.5 g of Na and 53.7 g of Br2 yields 55.4 g of NaBr. What is the percent yield?
2Na+Br2 2NaBr
1 answer
asked by
Rachel
443 views
5000.083TO 3 S.F
1 answer
asked by
OLANA
330 views
5000.083to3 signifcant
1 answer
asked by
OLANA
251 views
A patient received 0.21 g of active drug in a medication. If the recommended dose for the drug is 10. mg/kg, what is the weight
3 answers
asked by
Anonymous
306 views
There are two main units used to describe heat, the calorie and the Joule. The conversion between them is 1 calorie = 4.184 J. A
3 answers
asked by
Girl
714 views
A Piece of carpet has the area of 98.2m to the second power. What is this area in yd2 (1yd = 0.9144m) .
1 answer
asked by
rain
191 views
Argentite (Ag2S) is one of the common ores of silver. If 88.1 grams of sulfur was removed from ore, how many grams of Ag2S were
3 answers
asked by
Question
506 views
Calculate the molality of a solution prepared from dissolving 0.50 moles of ethanol in 5 moles of water
1 answer
asked by
KAELA
104 views
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