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2 years ago

Is the flame coloration a test for the metal or for nitrate ion?

Chemistry

2 answers:

maxonik [38]2 years ago

7 0

Answer:

The correct answer is metal.

Explanation:

The flame test is an analytical method used in chemistry to detect the presence of certain elements, mainly metal ions, based on the characteristic emission spectrum of each element. The color of the flame can also depend on temperature, identify the unknown element or simply a metallic ion based on its characteristics when emitting light.

Have a nice day!

mel-nik [20]2 years ago

5 0

Metallic ion because the metallic ions will enter an exited state and release photons energy, in the form of light, as they return to their ground state.

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AleksAgata [21]

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1 year ago

A 0.100 m solution of HCl dissolved in benzene has a freezing point depression of 0.512oC, while an 0.100 m solution of HCl in w

EleoNora [17]

Answer:

Explanation:

It said in water it had a freezing point of 0.352oC. so right i the start i picked C because it sounds like it doesn't dissociates in water so that is my answer

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3 years ago

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Tasya [4]

Answer:

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2 years ago

What is the term for the amount of salts in water? Evaporation

gtnhenbr [62]

Answer:

B.Salinity

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Explanation:

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2 years ago

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Density measurements were conducted on a 22.5oC sample of water which had a theoretical density of 0.997655 g/ml. A volume of 10

Sophie [7]

Let's divide the three experiments: The experiment with 10.00 mL of water is A), the experiment with 15.00 mL is B), and the experiment with 25.00 mL is C).

(1) Now let's calculate the experimental density of each experiment. Density (ρ) is equal to the mass divided by the volume, thus:

$p_{A} =9.98g/10.00mL=0.998g/mL\\p_{B} =15.61g/15.00mL=1.041g/mL\\p_{C} =25.65g/25.00mL=1.026g/mL$

(2)To calculate the average density, we add each density and divide the result by the number of experiments (in this case 3):

$p_{average}=\frac{p_{1}+p_{2}+p_{3}}{3} \\p_{average}=\frac{(0.998+1.041+1.026)g/mL}{3}\\p_{average}=1.022g/mL$

(3) The percent error is calculated by dividing the absolute value of the substraction of the theorethical and experimental values, by the theoretical value, times 100:

%error= $\frac{|p_{average}-p_{theoretical}|}{p_{theoretical}} *100$

%error= $\frac{|1.022g/mL-0.997655g/mL|}{0.997655g/mL}*100$

%error=2.44 %

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2 years ago