Complete the last two columns given the data already present in the table. A researcher wishes to determine how the water absorption capacity of sodium polyacrylate varies as a function of lithium-io

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Fields of application of sodium polyacrylate:

detergents

thickeners

in the composition of various paints

artificial snow

bath gels

superabsorbent polymers created on the basis of sodium polyacrylate are the main filler of children's diapers.

it is used[1] as a dispersant and scale inhibitor in the production of paper, pulp and food processing.

to preserve moisture in the soil.

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15. A researcher is working with haemoglobin that contains subunits of differing molecular weights. If the researcher performs SDS-PAGE, how many distinct bands should he see on the gel?

four distinct bands

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how does the root's capacity to store photosynthate contribute to water absorption?

The more photosynthate is stored, the more water absorption is due to osmosis.

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The nucleon number and proton number of the lithium atom are shown by the symbol above. Write the electronic configuration of lithium atom.

[He] 2s1

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The compound lithium carbonate, used to treat manic depression, has the formula of Li2CO3. Calculate the number of formula units of lithium carbonate present in a 0.500g sample of lithium carbonate.

Molar mass of Li2CO3 = 73.891 g/mol0.5/73.891= 0.0068moles

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Lithium atom has two naturally occuring isotopes 26Li and 27Li. Given that the relative molecular mass of Lithium is 6.94. What is the abundance of these isotopes?

average atomic mass = (26 + 27)/2= 26.526.5% = x + (1-x)26.5 × 3.47 = 91.95591.955 = 2xX = 45.978

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Define heat capacity; molar heat capacity and specific heat capacity of a substance and give relations between them.

Heat capacity or thermal capacity is a physical property of matter, defined as the amount of heat to be supplied to a given mass of a material to produce a...

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If 86.33 grams of sodium reacts with an excess of chlorine, what amount of Salt (sodium chloride) will be produced? Sodium + chlorine ® sodium chloride Na + Cl2 ® NaCl

Solution:Sodium + chlorine → sodium chloride  The balanced chemical equation:2Na + Cl2 → 2NaClAccording to the equation above: n(Na) = n(NaCl)Moles of Na = Mass of Na / Molar mass of NaThe molar...

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Sea water has sodium ion concentration of 1.08 x 104 ppm. If the sodium is present in the form of dissolved NaCl, what mass of NaCl is in each liter of sea water? density of sea water is 1.05 g/mL

1.08×104 ppm Na = 1.08×104 mg Na/1000 g solution Density 1.05 g/ml = 1050 g/L 1.08×104 mg Na/1000 g solution ×1005 g/L= 1.13×104 mg Na/L 1.13×104 mg Na/L ×1 g/1000...

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table salt, or sodium chloride is composed of 28.3% sodium and 71.7% chlorine. Calculate the mass of chlorine in 7.0 g of sodium chloride

Answer: 7.0 g NaCl x 0.717 %Cl/NaCl = 5.019 g Cl

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A 0.4230 g sample of impure sodium nitrate was heated, converting all the sodium nitrate to .1235 g of sodium nitrate and oxygen gas. Determine the percent of sodium nitrate in the original sample.

Answer:2HNO3 = 2HNO2 + O2m= 85 x 0.1235 / 69= 0.1521W%= 0.1521 / 0.4230 = 36%

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