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creativ13 [48]
3 years ago
12

A soda has a volume of 225 ml and a density of 3.2 g/ml. What is the mass

Chemistry
1 answer:
snow_lady [41]3 years ago
5 0

Answer:

The answer is

<h2>720 g</h2>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

volume = 225 mL

density = 3.2 g/mL

The mass is

mass = 3.2 × 225

We have the final answer as

<h3>720 g</h3>

Hope this helps you

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The teacher shows students a pictorial model of an atom. Which element is
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Answer:

C. Fluorine because the model has 9 protons which is represented by the atomic number

Explanation:

We usually identify an element by the number of protons in them. The number of protons is the atomic number of an atom.

  • Every atom has a specific number of protons in them.
  • This number of protons is the atomic number.
  • According to the periodic law, atoms are arranged on the periodic table based on their atomic number.
  • The given fluorine atom has 9 protons which represents the atomic number of the atom.
  • This way, the given number clearly shows the right model for identifying the chemical specie.
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2 years ago
Which will result in positive buoyancy and cause the object to float?
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I would say D. Let me know if i am wrong.
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3 years ago
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A 52.0-mL volume of 0.35 M CH3COOH (Ka=1.8×10−5) is titrated with 0.40 M NaOH. Calculate the pH after the addition of 23.0 mL of
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NaOH reacts with CH3COOH in 1:1 molar ratio to produce CH3COONa 

NaOH + CH3COOH → CH3COONa + H2O 

Mol CH3COOH in 52.0mL of 0.35M solution = 52.0/1000*0.35 = 0.0182 mol CH3COOH 

Mol NaOH in 19.0mL of 0.40M solution = 19.0/1000*0.40 = 0.0076 mol NaOH 

These will react to produce 0.0076 mol CH3COONa and there will be 0.0182 - 0.0076 = 0.0106 mol CH3COOH remaining in solution unreacted . Total volume of solution = 52.0+19.0 = 71mL or 0.071L 

Molarity of CH3COOH = 0.0106/0.071 = 0.1493M 

CH3COONa = 0.0076 / 0.071 = 0.1070M 

pKa acetic acid = - log Ka = -log 1.8*10^-5 = 4.74. 

pH using Henderson - Hasselbalch equation: 

pH = pKa + log ([salt]/[acid]) 

pH = 4.74 + log ( 0.1070/0.1493) 

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pH = 4.60.

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3 years ago
Use the geometric mean (leg) theorem. What is the
mars1129 [50]

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2/70

Explanation:

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How many oxygen atoms are in 2(NO3)
torisob [31]

6 Oxygen atoms

Explanation:

In the molecule 2(NO₃):

An atom is the smallest indivisible particle of any substance. They chemically combine to give compounds and molecules. Some of them are able to exist on their own.

An element is a substance that has a unique atom.

      NO₃ has two elements: N   and O

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learn more:

Number of atoms brainly.com/question/10419836

#learnwithBrainly

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