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vfiekz [6]
3 years ago
15

How can a flame test identify an unknown element?

Chemistry
1 answer:
Ilya [14]3 years ago
6 0

Answer:

the answer for this question is the option D

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6.285×10^3 mg = _____? _____ kg
TiliK225 [7]
One kilogram is equal to one thousand grams. Further, one gram is equal to 1000 mg. The conversion is as shown below,
                    (6.285 x 10³ mg) x (1 g / 1000 mg) x (1 kg / 1000 g)
The numerical value of the operation above is 0.006285 kg. 
6 0
3 years ago
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What volume of a 6.67 M NaCl solution contains 3.12 mol NaCl? L
harkovskaia [24]

Answer:

0.47dm³

Explanation

Given parameters :

Molarity of NaCl = 6.67M

Number of moles = 3.12mol

Volume of NaCl =?

Volume of NaCl = number of moles/Molarity

Volume of NaCl = 3.12mol/6.67M

Volume of NaCl = 0.47dm³

4 0
4 years ago
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Can someone please help me come up with a hypothesis for an experiment?
m_a_m_a [10]
I believe that sugar will desolve the fastest because of the room temperature
5 0
3 years ago
Which feature does an iron metal have?
notka56 [123]
A feature that an iron metal has is a sea of electrons
3 0
3 years ago
When the isotonic saline solution described in part A is connected to an unknown solution via a semipermeable membrane, the unkn
ozzi

B. The unknown solution had the lower concentration.

Explanation:

Osmosis is a phenomenon in which the molecules of the solvent has a tendency to move through a membrane which is semipermeable from lower concentrated side to the higher concentration side, so that the concentrations on both sides of the membrane must be equal.

So the unknown solution may have lesser concentration than the isotonic solution so that molecules of that solution move from less concentrated side to the more concentrated side, so its level drops.

3 0
3 years ago
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