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motikmotik
2 years ago
15

Calculate the density of a substance for which 4.78 x 106 L of the substance has a mass of 1.50 x 107 kg. Express your answer us

ing the correct number of significant figures, and do not enter your answer using scientific notation.
Chemistry
1 answer:
valentinak56 [21]2 years ago
4 0
7.89 is the correct answer I believe
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Chemistry Help (Naming Oxyacids Chart)
guapka [62]

Answer:

HClO₃ /chloric acid /suffix -ic/ ClO₃⁻ (chlorate)

HClO₂/ chlorous acid/ suffix -ous/ ClO₂⁻ (chlorite)

HNO₃ /nitric acid /suffix -ic/ NO₃⁻ (nitrate)

HNO₂/ nitrous acid/ suffix -ous/ NO₂⁻ (nitrite)

Explanation:

Chlorine has 4 positive oxidation numbers to form oxyacids: +1, +3, +5 and +7.

  • When it uses the oxidation number +5, it forms HClO₃, which is named chloric acid, with the suffix -ic. When it loses an H⁺, it forms the oxyanion ClO₃⁻ (chlorate).
  • When it uses the oxidation number +3, it forms HClO₂, which is named chlorous acid, with the suffix -ous. When it loses an H⁺, it forms the oxyanion ClO₂⁻ (chlorite).

Nitrogen has 2 positive oxidation numbers to form oxyacids: +3 and +5.

  • When it uses the oxidation number +5, it forms HNO₃, which is named nitric acid, with the suffix -ic. When it loses an H⁺, it forms the oxyanion NO₃⁻ (nitrate).
  • When it uses the oxidation number +3, it forms HNO₂, which is named nitrous acid, with the suffix -ous. When it loses an H⁺, it forms the oxyanion NO₂⁻ (nitrite).
7 0
2 years ago
A motor cyclist starts from rest and reaches a speed of 6m/s after travelling with uniform acceleration for 3s. What is his acce
choli [55]

Answer:

2m/s²

Explanation:

When an object starts or at its state of rest it has an Initial speed U = 0

Final speed = 6m/s

total time taken for the acceleration = 3s

Acceleration =?

Acceleration is the change in velocity (speed) with time

OR

Time rate of change of velocity

Acceleration = <u>Change in Speed(velocity)</u>

Time taken

Hence,

Acceleration = <u> </u><u> </u><u>V - </u><u>U</u><u> </u><u> </u>

t

a = <u>6</u><u> </u><u>-</u><u> </u><u>0</u>

3

a = <u>6</u><u> </u><u> </u>

3

a = 2m/s²

4 0
3 years ago
Which element comes from the greek word zinke?
Novay_Z [31]

Answer:

Zinc

The element was probably named by the alchemist Paracelsus after the German word Zinke (prong, tooth).

Explanation:

8 0
2 years ago
Read 2 more answers
How many atoms are found in the chemical formula below?
Trava [24]

the answer is 15.

4+4+4+1 =13 then u add the 2 outside the bracket which will give u 15

4 0
3 years ago
How many moles of hydrogen are in 3.0 moles of C6H12O6?
tangare [24]
<h3>Answer:</h3>

              36 moles of Hydrogen

<h3>Solution:</h3>

The molecular formula of Glucose is,

                                                 C₆H₁₂O₆

As clear from molecular formula, each mole of Glucose contains 12 moles of Hydrogen atoms.

Therefore,

                 1 mole of C₆H₁₂O₆ contains  =  12 moles of Hydrogen

So,

       3.0 moles of C₆H₁₂O₆ will contain  =  X moles of Hydrogen

Solving for X,

                        X =  (3.0 mol × 12 mol) ÷ 1 mol

                        X  =  36 moles of Hydrogen

8 0
3 years ago
Read 2 more answers
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