I have 5 queastions to ask
1. which one of the following chemical equations is balanced?
a) 2NaCl + H2SO4 ----- HCL +NaSO4
b) NH3 + H2O ---- 2NH4OH
c) KOH + H2SO4 ---- KHSO4 + H2O
d) 2Na + S ---- 2NaS
2. The molecular mass of sodium oxide (Na2O) IS
a) 22.98977.
b) 38.98917.
c) 45.97954.
d) 61.97894.
3. In electrolysis, current can flow through a liquid because ?
4. In a nuclear reaction, energy is released by the combination of 2 elements into a new element. This process is called?
5.The primary metallic element that's added to steel to make stainless steel is?
2006-12-28 06:27:08 · 8 answers · asked by keke16 1 in Science & Mathematics ➔ Chemistry
thank you equth23 for helping me with at least. everyone else wants to be a smart a$$. If you can't or won't help then do not reply. I am not dumb, I know what I can do. I know what you can do also.
2006-12-28 06:41:59 · update #1
1. C
2. D
3. Ions are present in the solution and ions are neede for electrical current to pass.
4. Fusion
5. Any mettalic element which gives stainless steel the desired characteristics such as hardness, mallebility...etc..
2006-12-28 07:55:06 · answer #1 · answered by Anonymous · 0⤊ 0⤋
I don't think i should be answering your questions directly but I will try to help you. A balanced equation is when there are the same amount of each element on both sides of the equation. I'll give an example with the first equation. There are 2Na on one side, but on the other side there is only 1Na. That means a is not a balanced equation.
For 2 find the mass of each element. do 2 x the mass of Na (sodium) + the mass of O(oxygen)
the next three question you can find by searching on the internet and it should not be too hard.
2006-12-28 06:36:07 · answer #2 · answered by shmousy636 3 · 0⤊ 0⤋
If you don't have anything more specific to measure the energy of the light besides the color: orange light is roughly 620nm yellowish green light is roughly 580nm. You can then use the equation c=l*v, where c is speed of light, l is wavelength converted to m, and v is the frequency, to find the frequency. If you were given the energy of the light, use E=hv, h is planck's constant, to get the frequency v. Then use the eqn above to get l.
2016-03-28 22:32:02 · answer #3 · answered by Anonymous · 0⤊ 0⤋
1. c, 2. d, 3. because there are ions in it, 4. fusion, 5. i have no idea, good luck!
2006-12-28 07:34:45 · answer #4 · answered by The Frontrunner 5 · 0⤊ 0⤋
1) c. is balanced.
2) d.
3) b/c ions are present
4) Fusion
5) carbon
I hope this helps!!
2006-12-28 06:55:20 · answer #5 · answered by smart-crazy 4 · 0⤊ 0⤋
1.)third one is balanced.
2.)fourth one .
3.)b'coz of presence of ions in it which help in movt of charges
4.)fusion
5.)chromium
2006-12-28 06:42:29 · answer #6 · answered by miinii 3 · 0⤊ 0⤋
the answer to #1 is d) 2Na + S ---- 2NaS
2006-12-28 06:35:25 · answer #7 · answered by eguth23 2 · 0⤊ 0⤋
And the answer to all five is TEXTBOOK.
2006-12-28 06:35:09 · answer #8 · answered by St N 7 · 0⤊ 1⤋