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V125BC [204]
3 years ago
5

HELP !! For the principal quantum number n equals 2, we can have sub-levels.

Chemistry
1 answer:
Charra [1.4K]3 years ago
6 0

Answer: d both a and b

Explanation:

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The 4 in formula 4H2O is a<br><br>1. coefficient<br>2. subscript<br>3. superscript<br>4. binomial​
Rom4ik [11]
1. Coefficient

Since it is a number that constant for the given substance
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3 years ago
Which combination can be used to make a buffer with a pH of 4.2? The Ka of benzoic acid, C6H5COOH, is 6.5×10^–5 and the Ka of hy
ankoles [38]

50.0 mL of 0.500 M HCN and 25.0 mL of 0.500 M sodium hydroxide combination can be used to make a buffer with a pH of 4.2. The KK

an of benzoic acid, C6H5COOH, is 6.5×10-5 and the an of hydrocyanic acid, HCN, is 4.9×10-10.

Benzoic acid

A white (or colourless) solid with the chemical formula C6H5CO2H, benzoic acid is pronounced: "bnzo.k." The simplest aromatic carboxylic acid is this one. The term comes from gum benzoin, which was the substance's exclusive source for a very long period. Many plants naturally contain benzoic acid, which is used as an intermediary in the formation of numerous secondary metabolites[9]. Benzoic acid salts are employed as food preservatives. An essential starting point for the industrial synthesis of many other chemical compounds is benzoic acid. The term "benzoates" refers to the salts and esters of benzoic acid.

To learn more about benzoic acid refer here:

brainly.com/question/24052816

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8 0
1 year ago
Is it possible for parents whose alleles for a dominant trait are homozygous dominant to have offspring with a homozygous recess
Fynjy0 [20]
The right answer for the question that is being asked and shown above is that: "TRUE." It is <span>possible for parents whose alleles for a dominant trait are homozygous dominant to have offspring with a homozygous recessive trait. This is true.</span>
8 0
4 years ago
How many moles of H2O are in 64.0 g of H2O
Alina [70]

Answer:

Explanation:

stoichiometry of C₂H₂ to H₂O is 2:2.

Number of moles of C₂H₂ = molar mass of C₂H₂  

Since the molar mass of C₂H₂  is 26 g/mol.

Number of C₂H₂  moles reacted = 64.0 g / 26 g/mol = 2.46 mol.

according to a molar ratio of 2:2.

the number of H₂O moles formed = a number of C₂H₂  moles reacted.

Therefore the number of H₂O moles produced = 2.46 mol

8 0
2 years ago
Eight hours of sleep per day is how many seconds per week?
noname [10]
8 hours times 60 minutes is 480 and times 60 seconds is 28800 seconds of sleep per day. That times 7 days is 201,600 seconds of sleep per week
3 0
3 years ago
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