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2 years ago

What kind of organic compound is ethanoic acid?

Chemistry

1 answer:

Setler [38]2 years ago

7 0

Answer:

Acetic acid , systematically named ethanoic acid , is a colourless liquid organic compound with the chemical formula CH3COOH.

Explanation:

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How is a lithium atom (Li) different from a lithium ion (Li+)?

sdas [7]

<span>Li has fewer electrons than Li+ (protons can't change)
</span>

8 0

2 years ago

Read 2 more answers

1.Using the absorbance of the spinach extract and the equation of the trendline, determine the concentration of the extract solu

lys-0071 [83]

Answer:

Explanation:

From the given information:

We are to make use of the spinach absorbance extract which is the corrected absorbance (y) = 0.306

And also the trendline equation:

y = 1609x + 0.0055

where,

x = absorbance of the spinach extract.

∴

0.306 = 1609x + 0.0055

collecting the like terms

0.306 - 0.0055 = 1609x

0.3005 = 1609x

x = 0.3005/1609

x = 1.8676 × 10⁻⁴

x ≅ 0.0002 M

No. of grams for the chlorophyll can be computed as follows:

recall that:

molar mass of chlorophyll = 893.5 g/mol

the volume = 25ml = (25/1000) L = 0.025 L

∴

In spinach solution, the no. of grams for the chlorophyll:

= (0.0002) mol/L × (893.5 g/mol) × (0.025) L

= 0.0044675 g

≅ 0.0045 g

In the spinach, the concentration of chlorophyll = no of grams of chlorophyll/ mass of the spinach

= 4.5 mg/0.1876 g

= 23.987 mg/g

≅ 24 mg/g

4 0

2 years ago

An aqueous solution of Pb(NO3)2 is made by placing 275 g of solid Pb(NO3)2 into a volumetric flask and adding water to the 1.00

Anarel [89]

Answer:

A) 0.831 M

B) 1.07 m

C) 26.2%

D) 0.0189

Explanation:

A) First we convert the mass of Pb(NO₃)₂ to moles:

275 g ÷ 331 g/mol = 0.831 mol Pb(NO₃)₂

Then we divide it by the total volume (1.00 L) to calculate the molarity:

0.831 mol / 1.00 L = 0.831 M

B) We convert the grams of water to kilograms:

775 g / 1000 = 0.775 kg

Then we divide the Pb(NO₃)₂ by the kilograms of water:

0.831 mol / 0.775 kg = 1.07 m

C) We divide the mass of Pb(NO₃)₂ by the total mass of the solution:

$\frac{gPb(NO_{3})_{2}}{gPb(NO_{3})_{2}+gH_{2}O}$ *100% $=\frac{275}{275+775}$ * 100% = 26.2%

D) We calculate the moles of water:

775 g H₂O ÷ 18g/mol = 43.1 mol H₂O

Then we divide the Pb(NO₃)₂ moles by the total number of moles:

$\frac{0.831}{0.831+43.1}$ = 0.0189

6 0

3 years ago

2NaCl → 2Na +Cl2<br> What reaction is this

weqwewe [10]

it is

balanced reaction

8 0

2 years ago

A solution in which the molarity of the hydroxide ion is larger than the molarity of the hydronium ion is termed 1. amphiprotic.

Kruka [31]

Answer: 3. basic

Explanation:

pH is the measure of acidity or alkalinity of a solution.

pH is measured by taking negative logarithm of hydrogen ions concentration.

Electrolyte is a solution which contains ions dissolved in water and hence is a good conductor of electricity.

A basic solution has more concentration of $OH^-$ as compared to $H^+$ .

An neutral solution has equal concentration of $H^+$ as that of $OH^-$ .

An acidic solution has more concentration of $H^+$ as compared to $OH^-$ .

6 0

3 years ago