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Ksenya-84 [330]
3 years ago
12

HELP! SCIENCE WORK!!!!

Chemistry
1 answer:
Serggg [28]3 years ago
8 0

Answer:

Between all other stars, I would say the answer is W.

Anyone correct me if I'm wrong. :)

Explanation:

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Which substance has ionic bonds?<br><br><br><br>A) Br2<br><br>B) NH3<br><br>C) H2O<br><br>D) LiI
ludmilkaskok [199]
D

ionic bond is between a metal and non-metals

Lithium(Li) is a metal. it will lose one electron in ionization.
iodine (I)is non metal. it will gain one electron from Lithium in ionization

hope this helps
3 0
4 years ago
One cup of fresh orange juice contains 139 mg of ascorbic acid (vitamin c, c6h8o6) given that one cup = 264.8 ml calculate the m
SVEN [57.7K]
The answer to this question would be: 3 molar
A molar unit will be equal to moles of solute per 1 liter of solvent. In this question, you are given the volume of the solution (264.8ml) and the weight of the molecule(139mg). Since the unit is moles not mg, then you need to convert the molecule into moles. To do that you need to know the ascorbic acid molecular weight which was: 6*12 + 8*1 + 6 *16 =<span>176mg/moles.

molecule in moles= 139mg/ (176 mg/moles)= 0.79 moles

Then the molarity of the juice should be: 0.79 moles/ (1000ml/264ml)= 2.991 M= 3 M</span>
4 0
4 years ago
At standard temperature and pressure 1 mole of any gas has a volume of 22.4 liters of gas. If the 5 grams of baking soda reacted
azamat

Answer:

1.33L of gas

Explanation:

1 mole of Baking soda (NaHCO₃) reacts with acetic acid producing 1 mole of CO₂, water and sodium acetate, thus:

NaHCO₃ + CH₃COOH → NaCH₃COO + H₂O + CO₂

5g of NaHCO₃ (Molar mass: 84g/mol) are:

5g × (1mol / 84g) = 0.0595 moles of NaHCO₃ that produce 0.0595 moles of CO₂ -Moles of gas-.

If 1 mole of gas occupies 22.4L, 0.0595 moles occupy:

0.0595 moles gas × (22.4L / mol) = <em>1.33L of gas</em>

4 0
4 years ago
There are around muscles in the human body<br><br> 640<br> 250<br> 100
Gwar [14]
There are 640 muscles in the human body
6 0
4 years ago
The right answer for this problem
Evgen [1.6K]

Answer:

(a)  When aqueous solution of hydrochloric and ammonia chemically react together then it results in the formation of ammonium chloride.

The reaction equation for this reaction is as follows.

         

Now, ioni equation for this reaction is as follows.

    

Cancelling the spectator ions, the net ionic reaction equation is as follows.

          

(b)   When sodium hydroxide chemically reacts with ammonium chloride then it forms ammonia, water and sodium chloride as follows.

    

Now, the total ionic equation will be as follows.

 

Cancelling the spectator ions from the above equation. Then the net ionic equation will be as follows.

         

5 0
4 years ago
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