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rusak2 [61]
3 years ago
9

What can you conclude about the classification of idonie

Chemistry
1 answer:
LenKa [72]3 years ago
4 0

Iodine is classified as a halogen — a subset of very chemically reactive elements (Group 17 on the periodic table) that exist in the environment as compounds rather than as pure elements. The other halogens include fluorine (F), chlorine (Cl), bromine (Br) and astatine (At).

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In chemistry, what would the chemical reaction look like if you added graphite to a solution of lead (II) nitrate?
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Can i guess, am i gonna give a suspension, so the graphite is gonna settle at the bottom

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3 years ago
A scientist collects 0.24 mole of hydrogen gas in a balloon. The temperature of the hydrogen is 35 degrees Celsius, and the pres
slava [35]

Answer:

             5.77 L

Solution:

Data Given:

                Moles  =  n  =  0.24 mol

                Temperature  =  T  =  35 °C + 273  =  308 K

                 Pressure  =  P  =  1.05 atm

                 Volume  =  V  =  ?

Formula Used:

Let's assume that the hydrogen gas in balloon is acting as an Ideal gas, the according to Ideal Gas Equation,

                 P V  =  n R T

where;  R  =  Universal Gas Constant  =  0.082057 atm.L.mol⁻¹.K⁻¹

Solving Equation for V,

                 V  =  n R T / P

Putting Values,

                 V  =  (0.24 mol × 0.082057 atm.L.mol⁻¹.K⁻¹ × 308 K) ÷ 1.05 atm

                 V  = 5.77 L

6 0
4 years ago
A ridge characteristic describes a property found where ?
Marrrta [24]
A ridge characteristic describes a property found on fingernails

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6 0
3 years ago
Erioglucine is a blue-colored dye that absorbs its complementary color, red, in aqueous solution around 645 nm. Unfortunately, t
ExtremeBDS [4]

Answer:

For the control experiment: 0.0552 M of aqueous solution of erioglaucine has absorbance of 0.035 M\\

From Lambert-Beer's law we know:

Absorbance = e\cdot c \cdot l\\

Here; e is the molar absorptivity coefficient of erioglaucine

l = length of cuvette in which the solution is taken = 1 cm

A sorbance by the erioglaucine = total absorbance - absorbance by distilled water = 0.331-0.019 = 0.312

So; by putting the values in the above equation; we get:

0.312 = 0.0552 M \cdot e\cdot~1cm\\

So; e = \frac{0.331}{0.0552} M^{-1}cm^{-1}= 5.65 M^{-1}cm^{-1}

The molar absorptivity coefficient of erioglaucine is 5.65 M^{-1}cm^{-1}\\

The absorbance of erioglaucine in distilled water (contaminated with metal ions) is: 0 .217

The absorbance of distilled water is 0.019

So; absorbance of erioglaucine itself is : 0.217-0.019 = 0.198

Again using Lambert Beer law; we get:

A= e\cdot c\cdot l

0.198 = 5.65 M^{-1}cm^{-1} \cdot  c \cdot  1 cm ( c = concentrartion)

c = 0.198/5.65 M = 0.035 M

The concentration of the erioglaucine is 0.035 M\\

Explanation:

4 0
4 years ago
What is photosynthesis?​
dsp73
The process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.
7 0
3 years ago
Read 2 more answers
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