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Questions Asked

allikatt:
Group Title
Roughly what percent of the gene is RNA transcript?
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

allikatt:
Group Title
Help me out please?
What is the mole fraction of solute and the molal concentration for an aqueous solution that is 14.0% NaOH by mass?
 updated one year ago
 No Medals Yet
Mathematics

allikatt:
Group Title
Help calculating this?
The boiling point of an aqueous solution is 102.17 °C. What is the freezing point?
 updated one year ago
 10 replies
 No Medals Yet
Mathematics

allikatt:
Group Title
How do I solve this kind of problem?
The solubility of BaCrO4 in water is 3.7 mg in 1.0 L at 25 degrees Celsius. What is the value of Ksp…
 updated one year ago
 No Medals Yet
Mathematics

allikatt:
Group Title
How do I solve this kind of problem?
What is the pH of 0.010 M aqueous hypochlorous acid? (Ka of HOCl=3.5*10^8)
 updated one year ago
 11 replies
 2 Medals
Mathematics

allikatt:
Group Title
At a certain temperature, the solubility of strontium arsenate, Sr3(AsO4)2, is 0.0590 g/L. What is the Ksp of this salt at this temperature?
 updated one year ago
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Mathematics

allikatt:
Group Title
If a buffer solution is 0.210 M in a weak acid (Ka = 1.3 × 105) and 0.430 M in its conjugate base, what is the pH?
 updated one year ago
 1 reply
 1 Medal
Mathematics

allikatt:
Group Title
How can you look at a compound and know if it's a weak acid or base? I can't seem to figure it out.
 updated one year ago
 5 replies
 1 Medal
Mathematics

allikatt:
Group Title
Help me out?
The Ka value for acetic acid, CH3COOH(aq), is 1.8× 10–5. Calculate the pH of a 1.60 M acetic acid solution.
 updated one year ago
 5 replies
 2 Medals
Mathematics

allikatt:
Group Title
Help me out, please?
A mass of 14.72g of (NH4)2 SO4 (molar mass = 132.06 g/mol) is dissolved in water. After the solution is heated, 30.19 …
 updated one year ago
 5 replies
 1 Medal
Mathematics

allikatt:
Group Title
Help please?
What mass of Zn(NO3)2 (molar weight 189.4 g/mol) must be diluted to a mass of 1 kg with h2o to prepare 97 ppm Zn2+ (aq)?
 updated one year ago
 1 reply
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Mathematics

allikatt:
Group Title
Help please?
What is the boiling point of a solution containing .852 g naphthalene (C1C0H8, molar weight 128.2 g/mol) dissolved in 14 g ben…
 updated one year ago
 4 replies
 No Medals Yet
Mathematics

allikatt:
Group Title
Help please?
What is the boiling point of a solution containing .852 g naphthalene (C1C0H8, molar weight 128.2 g/mol) dissolved in 14 g benz…
 updated one year ago
 No Medals Yet
Mathematics

allikatt:
Group Title
Help determining reaction order, please?
Assume that 2NO(g) + O2(g) > 2NO2(g) proceeds via the following rate expression:
…
 updated one year ago
 4 replies
 1 Medal
Mathematics

allikatt:
Group Title
Can someone explain please?
If an elementary reaction involves the collision of two identical molecules, then the elementary reaction is __…
 updated one year ago
 4 replies
 1 Medal
Mathematics

allikatt:
Group Title
Help please?
A certain reaction has an activation energy of 52.34 kJ/mol. At what Kelvin temperature will the reaction proceed 3.50 times f…
 updated one year ago
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Mathematics

allikatt:
Group Title
Help please?
Suppose a 3% wt solution of poly(vinyl alcohol) in water is prepared from the polymer sample having molar mass 75,000 g/mol. C…
 updated one year ago
 3 replies
 2 Medals
Mathematics

allikatt:
Group Title
Can someone explain this, please?
The boiling point of an aqueous solution is 101.38 °C. What is the freezing point?
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

allikatt:
Group Title
Can someone please explain this question?
A solution of H2SO4(aq) with a molal concentration of 3.97 m has a density of 1.216 g/mL. What is…
 updated one year ago
 6 replies
 No Medals Yet
Mathematics

allikatt:
Group Title
Question about dehydration reactions. What is the molecular formula made by linking ten glucose molecules together by dehydration actions? T…
 updated one year ago
 3 replies
 1 Medal
Mathematics

allikatt:
Group Title
What is the empirical formula for titanium oxide?
 updated 2 years ago
 1 reply
 No Medals Yet
Mathematics

allikatt:
Group Title
I need help figuring out how to find maximum height, please.
A ball is thrown straight up from the top of a building 144 ft tall with an in…
 updated 2 years ago
 6 replies
 2 Medals
Mathematics

allikatt:
Group Title
How can you tell the difference in a Lewis Acid and a Lewis Base?
 updated 2 years ago
 8 replies
 1 Medal
Mathematics

allikatt:
Group Title
I'm having some major issues with empirical formulas. Can someone help me out?
 updated 2 years ago
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Mathematics

allikatt:
Group Title
Can someone please explain how you calculate standard enthalpy change?
 updated 2 years ago
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Mathematics

allikatt:
Group Title
How can you tell if a molecule is polar or nonpolar?
 updated 2 years ago
 4 replies
 1 Medal
Mathematics

allikatt:
Group Title
How many electrons are needed to fill the g subshell?
 updated 2 years ago
 3 replies
 2 Medals
Mathematics

allikatt:
Group Title
How do you find the domain of a function? For example, f(x)=3x+5 or f(x)=x^33x+2
 updated 2 years ago
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Mathematics

allikatt:
Group Title
How do you convert the general form equation of a circle to the standard form?
 updated 2 years ago
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Mathematics

allikatt:
Group Title
How do you calculate specific heat?
 updated 2 years ago
 5 replies
 2 Medals
Mathematics
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