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Murrr4er [49]
3 years ago
10

Why is it important to read a volume measurement using a graduated cylinder at eye level on the lab bench top verse just holding

it in your hand? Explain your reasoning in detail
Chemistry
1 answer:
Afina-wow [57]3 years ago
5 0
<span>Measuring with a graduated cylinder is complicated somewhat by a meniscus.  A meniscus is the curvature of the surface of the water.  Water "sticks" to the walls of the graduated cylinder, but only on the sides and not the middle.  


</span>
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All the squares outlined on the model cells are 1 cm by 1 cm.
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Answer:

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Write equations to show whether the solubility of either of the following is affected by pH:(b) Ca₃(PO₄)₂.
Vera_Pavlovna [14]

<u>The </u><u>pH </u><u>of the solution is also </u><u>increased.</u>

<u></u>

What is pH and its importance?

  • pH is an important quantity that reflects the chemical conditions of a solution.
  • The pH can control the availability of nutrients, biological functions, microbial activity, and the behavior of chemicals.
  • The pH is then calculated using the expression: pH = - log [H3O+].

  • The solubility of an ionic compound is affected by the hydronium ion concentration.
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Therefore, the pH of the solution is also increased.

Learn more about pH

brainly.com/question/491373

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8 0
2 years ago
What are three main classifications of the elements
neonofarm [45]

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Explanation:

4 0
4 years ago
If a sample of HF gas at 694.9 mmHg has a volume of 3.463 Land the volume is changed to 5.887 L, then what will be the new press
VARVARA [1.3K]

Answer:

\large \boxed{\text{381.7 mmHg}}

Explanation:

Data:

p₁ = 694.9 mmHg; V₁ = 3.463 L

p₂ = ?;                     V₂ = 5.887 L

Calculation:

\begin{array}{rcl}p_{1}V_{1} & = & p_{2}V_{2}\\\text{648.9 mmHg} \times \text{3.463 L} & = & p_{2} \times\text{5.887 L}\\\text{2247.1 mmHg} & = & 5.887p_{2}\\p_{2} & = & \dfrac{\text{2247.1 mmHg}}{5.887}\\\\& = &\textbf{381.7 mmHg}\\\end{array}\\\text{The new pressure of the gas is $\large \boxed{\textbf{381.7 mmHg}}$}

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Science / Chemistry Worksheet
kaheart [24]

Explanation:

K2O Now the cation is the element at the front so it would be K2 because the 2 belongs with the K which is Potassium and now Anion is the last element O for oxygen

7 0
4 years ago
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