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Buckeye
ChemistryChemistry
What type of chemical process is used to create perfume?
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Skylar Calderon
ChemistryChemistry
Which of the following is a polyatomic ion?

O A. HCI

O B. Na

O C. PO,

O D. 52
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Jensen Ritter
ChemistryChemistry
What are the cations and anions for V2 (CO3) 3
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Brenton Mcgee
ChemistryChemistry
If you were asked to convert 4.2 x 1022 atoms of aluminum to moles, which of the following should you use for the conversion?
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Sergio Avery
ChemistryChemistry
Carbonic acid (H2CO3) does not dissortate 100 percent in water. What type of substance is it?

weak acid

Strong base

strong acid

weak base
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Aspen Landry
ChemistryChemistry
The standard enthapy of combustion of solid urea co (nh2) 2 is - 632kjmol-1 at 298k
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Guest
ChemistryChemistry
What happens to an isotopes during radioactive
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Quinn Arellano
ChemistryChemistry
Why does the effective nuclear charge increase across a row of the periodic table?
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Dallas Bryant
ChemistryChemistry
Iodine-131 decays to form xenon-131. the half-life of this reaction is 8.07 days. from a 200-g sample of iodine-131, how much of the sample is xenon-131 after 16.14 days?
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Lana Choi
ChemistryChemistry
Complete the following statement by checking all that apply

Creativity allows scientists to

develop multiple approaches to solving problems.

adapt to changes in scientific knowledge.

look at old problems in new ways.

adapt new technologies for scientific use.

appreciate other scientists' approaches to investigating hypotheses.
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Sariah Levine
ChemistryChemistry
The atomic weight of hydrogen is 1.00794.

a. True

b. False
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Deshawn Orozco
ChemistryChemistry
Describe What kind of

ions do metals form? What

kind of ions do nonmetals

form?
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Morgan Rhodes
ChemistryChemistry
A car is driven through streets

treated with salt and then

parked in a warm garage.

a) How will the rate of rusting

compare with a car that

has not been driven in the

streets treated with salt but

left parked outside? Explain

your answer

b) What advice would you give

to the driver of the first car

to slow down rusting?
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Rivers
ChemistryChemistry
Amalgam is an alloy that contains mercury and other metals. Which of these atoms would most likely form metallic bonds with mercury? Check all that apply. bromine copper hydrogen iodine silver tin
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Bianca Page
ChemistryChemistry
Which fossil fuel is the most widely consumed in the United States? A. petroleum B. natural gas C. peat D. coal
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