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zhenek [66]
3 years ago
15

Why is using only clean glassware important?

Chemistry
2 answers:
stealth61 [152]3 years ago
6 0

Good laboratory technique demands clean glassware because the most carefully executed piece of work may give an erroneous result if dirty glassware is used. In all instances, glassware must be physically and chemically clean and in many cases, it must be bacteriologic-ally clean or sterile.

Lady_Fox [76]3 years ago
4 0
Keeping glassware physically neat and clean, free of grease, and bacteria is therefore of the utmost importance
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What is the rule when "ao" or "oo" are together when naming covalent bonds
Gnoma [55]

They are converted into a single “o” when "ao" or "oo" are together when naming covalent bonds.

<h3>What is a covalent bond?</h3>

A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms.

Sometimes, while naming the chemical compounds, a problem arises when compounds with “ao” and “oo” are written with -ide name. Conventionally, they are converted into a single “o”.

For example, the “ao” in the dichlorine hept-ao-xide (Cl_2O_7). This “ao” in the Cl_2O_7 can be converted into “o”. As the result, the correct name of this compound would be dichlorine hept-o-xide.

Hence, they are converted into a single “o” when "ao" or "oo" are together when naming covalent bonds.

Learn more about the covalent bond here:

brainly.com/question/12661797

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8 0
2 years ago
Which of these is a covalent compound?<br> A. MgO<br> B. CO<br> C. LiCl<br> D. AlCl3
kati45 [8]
The answer would be B. CO
4 0
3 years ago
Read 2 more answers
How many sodium atoms are present in 0.2310 g of sodium?
umka21 [38]

The number of atoms present in 0.231 g of sodium is 6.02 x 10²¹ atoms.

The given parameters;

  • <em>mass of the reacting sodium = 0.231 g</em>
  • <em>1 mole of an atom = 6.02 x 10²³ atoms</em>
  • <em>the atomic mass of sodium is 23 g/mol</em>

The number of moles of 0.231 g of sodium available is calculated as;

no. \ of \ moles = \frac{Reacting \ mass}{Molar \ mass} \\\\no. \ of \ moles = \frac{0.231}{23} \\\\no. \ of \ moles = 0.01 \ mol.

The number of atoms of 0.01 mole of sodium available is calculated as;

1 mole ---------- 6.02 x 10²³ atoms

0.01 ----------------- ?

= 0.01 x 6.02 x 10²³ atoms

= 6.02 x 10²¹ atoms.

Thus, the number of atoms present in 0.231 g of sodium is 6.02 x 10²¹ atoms.

Learn more here:brainly.com/question/11461637

7 0
2 years ago
Read 2 more answers
Would Lithium and Fluoride still be neutral?<br>explain in 2-3 sentences
Fed [463]

Answer:

LiF (lithium fluoride)

Explanation:

Lithium ions have a charge of +1 and fluoride ions have a charge of -1. The formula unit for lithium fluoride is LiF, which means that the lithium and fluoride ions are present in a 1:1 ratio. So the positive and negative charges cancel each other, and the compound lithium fluoride is neutral.

6 0
2 years ago
Determine the number of particles present in 8.6 moles of Aluminum
katrin [286]

Answer:

5,18*10^{24}

Explanation:

N=n*Na

N=8.6*6.02*10^{23}

N=5,18*10^{24}

4 0
3 years ago
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