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pychu [463]
3 years ago
14

Which molecule among these is polar? NH3 BCl3 O2 NO3

Chemistry
1 answer:
Readme [11.4K]3 years ago
5 0
The answer is NH3. I hope this helped!


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How many moles are in NaOH?
CaHeK987 [17]

1 mole consist of 6.022 ×10 ²³

Therefore in NaOH = 6.022 ×10 ²³ moles of NaOH

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3 years ago
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Is 2 pounds bigger than 80 ounces
Ratling [72]
No because 2 pounds only equals 16 ounces times 2 so it equals 32 ounces which is not bigger than 80
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What kind of nuclear reaction would result in the release of a beta particle
lorasvet [3.4K]
Beta decay converts a neutron to a proton and emits a high-energy electron, producing a daughter nucleus with the same mass number as the parent and an atomic number that is higher by 1.
3 0
3 years ago
A solution is made
Anna11 [10]

Answer:

99.3%

Explanation:

The percent by mass of the solute can be expressed as:

  • % mass = \frac{MassSolute}{MassSolute+MassSolvent} * 100%

And for this problem:

  • Mass of Solute = Mass of sodium lithium chloride = 29 g
  • Mass of Solvent = Mass of Water

So to calculate the percent by mass first we need to <u>calculate the mass of water</u>, to do so we use its<em> density</em> (1 g/L):

  • 202 mL is equal to (202/1000) 0.202 L.

Density water = mass water / volume

  • 1 g/L = mass water / 0.202 L
  • Mass water = 0.202 g

Now we have all the data required to <u>calculate the % mass:</u>

  • % mass = \frac{29g}{29g+0.202g} * 100 % = 99.3%
3 0
3 years ago
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Hey sample of helium occupies 235 mL at 788 tour and 25°C. If the sample is condensed into a 0.115 L flask what will be the new
7nadin3 [17]

the system is in constant temperature

so it follows Boyle's law

i.e.P1V1=P2P2

where P1=initial pressure=788 tour

P2=final pressure= ?

V1=initial volume=235 ml

V2=final volume=0.115 ml

3 0
3 years ago
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