08/28/20

How many Significant Figures does the number 5264.00 have? *
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08/28/20

How many significant figures does the number 0.000504 have? *
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08/28/20

What is 0.000585 written in scientific notation? *
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08/28/20

If P = 1.5, V = 13, R = 0.082, and T = 290, solve for n in the equation: PV = nRT. *
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08/24/20

Complete combustion of 4.00 g of a hydrocarbon produced 12.3 g of CO2 and 5.68 g of H2O. What is the empirical formula for the hydrocarbon? Insert subscripts as necessary.
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08/24/20

How many significant figures are in the answer when you divide 486.02 by 0.056?
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08/24/20

How many significant figures are in the answer when you multiply 67.20 x 8.02?

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08/22/20

College Organic Chem

Please help me im having problems finding and Drawing 2 diasteromers of a single structure. can someone please show me in expanded form. thank you
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08/22/20

Complete and fill in the appropriate HMLS hazard coding colors and numbers on the label for acetone
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08/20/20

Chemistry exercises 2
I need help with these 2? Someone ??In aerospace Li2O is used to bind the exhaled CO2. How many litres of CO2 gas at 25 °C and 1010 hPa can bind 1 kg of Li2O ?Li2O + CO2 -> i2 CO3 When HgO is... more
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08/20/20

Chemistry exercises
can someone help me ? A solid consists of soda ash and calcium nitrate. To 10,0 g of this mixture add 250 ml of 0,5 M sulphuric acid. The gas formed takes up a volume of 2,05 l at 25 °C and a... more
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08/20/20

The reaction between sodium metal and water produces sodium hydroxide and hydrogen gas. If 35.0g of each sodium metal and water are initially reacted, calculate the mass of sodium hydroxide produced.
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08/19/20

Calculate E°, identify the cathode and anode, and give the overall balanced equation.

Calculate E°, identify the cathode and anode, and give the overall balanced equation. Assume that all concentrations are 1.0 M and that all partial pressures are 1.0 atm. Standard reduction... more
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08/08/20

The following information is given for copper at 1atm
boiling point = 2567 °C Hvap(2567 °C) = 305 kJ/mol melting point = 1083 °C Hfus(1083 °C) = 13.0 kJ/mol specific heat solid= 0.385 J/g°C specific heat liquid = 0.494 J/g°C What is H... more
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08/08/20

Indigo is the dye used in coloring blue jeans. The structure of indigo is:
Indicate the hybrid orbitals used by the atoms listed below: Atom Number Hybrid... more
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08/07/20

Use the VSEPR model to answer the following question:
Use the VSEPR model to answer the following question:Which of the compounds exhibit sp3 hybridization by the central atom?(Select all that apply.)PCl3H2OCOSSO2PF3
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07/24/20

potassium phosphate and manganese(II) nitrate are combined, solid manganese(II) phosphate and a solution of potassium nitrate are formed. The net ionic equation for this reaction is:
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07/23/20

Write the balanced net ionic equation for the precipitation of manganese(II) hydroxide from aqueous solution
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07/23/20

Write the net ionic equation for the following molecular equation. 3Ni(NO3)2(aq) + 2(NH4)3PO4(aq) = Ni3(PO4)2(s) + 6NH4NO3(aq)
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07/21/20

For each of the following sets of reactants, write “NR” for no reaction OR write the chemical formulas of the products (including the physical states) and balance the equation.
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07/21/20

State the oxidation states for sulfur in the following compounds: a) SO3 b) H2SO4
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07/21/20

State whether the following compounds are soluble or insoluble:

an explanation would be great as well:)
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07/21/20

In the laboratory you dissolve 19.2 g of chromium(II) sulfate in a volumetric flask and add water to a total volume of 375 . mL.
What is the molarity of the solution?  M
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07/09/20

I think of n2o has a pressure 45.0 psi what is this pressure in atmosphere
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07/07/20

what is the IUPAC name of the compound below
the iupac name of this organic compoundBrCH₂CH₂CH₂OH
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