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danny123
Questions and answers by visitors named
danny123
Questions (27)
What is the only positive ion found in H2SO4(aq)?
a. ammonium ion b. hydronium ion c. hydroxide ion d. sulfate ion The answer's
5 answers
8,991 views
What are examples of inclined planes in the kitchen?
5 answers
3,241 views
An atom contains a total of 29 electrons. When the atom is in the ground state how many principle energy levels will contain
5 answers
1,611 views
Write x in terms of e: ln x^2 = 8.
Is it e^2√2 = x?
4 answers
455 views
When you solve 6 + 5|2r-3|≥ 4, is the answer r ≥ 13/10 and r ≤ 17/10?
1 answer
418 views
Compare the amount of heat required to vaporize a 200.-gram sample of H20(L) at its boiling point to the amount of heat required
4 answers
2,214 views
What is the total number of principal energy levels or shells in an atom with an atomic number of 30? and why?
(1) 3 (2) 4 (3) 5
2 answers
544 views
When you simplify 5^-1(3^-2*2^-3), is it 1/360?
1 answer
320 views
How do you simplify (x^3+x^2-x-1)/(x^3-x^2-x+1)?
1 answer
266 views
Was the middle class satisfied with the steps Napoleon took to restore order to France?
1 answer
356 views
The chemical bond between which two atoms is most polar?
(1) C–N (3) S–Cl (2) H–H (4) Si–O How do you find out?
3 answers
3,716 views
Which formula represents a molecular compound?
(1) Kr 3) N2O4 (2) LiOH (4) NaI How do you know?
4 answers
2,456 views
Magnesium nitrate contains chemical bonds that are ?
1. Covalent Only 2. Ionic Only 3. Both Covalent And Ionic 4. Neither
3 answers
4,012 views
How is the chemical bonding in Na3PO4 both covalent and ionic?
3 answers
1,914 views
Which element requires the least amount of energy to remove the loosely held electron from a gaseous atom in the ground state?
a.
6 answers
4,403 views
In calcium, the electron configuration is 2-8-8-2. Why does the 3rd level have more energy than the 2nd if they're both 8?
1 answer
362 views
Why, in terms of atomic structure, is the radius of an Na atom larger than the radius of an Na+ ion?
3 answers
880 views
At STP, a 7.49-gram sample of an element has a volume of 1.65 cubic centimeters. The sample is most likely (1) Ta (3) Te (2) Tc
5 answers
2,500 views
What kind of figurative language is in "She pulled in her horizon like a great fish-net,". Is it both a hyperbole and a simile?
1 answer
395 views
A sample of gas confined in a cylinder with a movable piston is kept at constant pressure. The volume of the gas doubles when
4 answers
3,397 views
The gram-formula mass of NO2 is defined as the mass of one mole of
a. one mole of NO2 b. one molecule of NO2 c. two moles of NO
4 answers
2,748 views
What is the empirical formula of a compound that has a carbon-to-hydrogen ratio of 2 to 6?
Is it CH3?
5 answers
591 views
A rigid cylinder contains a sample of gas at STP. What is the pressure of this gas after the sample is heated to 410 K?
a. 1.0
4 answers
4,630 views
Which quantity of particles is correctly represented by the formula H2SO4? Explain.
3 answers
1,441 views
Given the balanced equation representing a reaction:
Cao(s) + CO2(g) ---> CaCO3(s) + heat What is the total mass of CaO(s) that
4 answers
7,882 views
How do solve (x^2/3) +1 = 9?
1 answer
293 views
is a dishwasher a wheel and axle
1 answer
297 views
Answers (5)
but can't you simplify that to CH3
thanks
thanks!
thanks
thanks
