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Natali [406]
3 years ago
13

You are looking at an atom that has the atomic number of 7 and an atomic mass of 16. how many neutrons are there in this atom?

Chemistry
1 answer:
vodomira [7]3 years ago
4 0
The elements has 7 protons and 9 neutrons.
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Arrange the measurements from least to greatest
Lynna [10]

Answer: 1.8 micrograms, 1.8 milligrams, 1.8 grams, 1.8 kilograms

Explanation:

3 0
3 years ago
Which number is equal to –906,060?
mamaluj [8]
In absolute value it is equal to 906,060
In scientific notation it is equal to -9.06,060^5
7 0
3 years ago
If 27.50 mL of 0.120 M NaOH neutralizes 0.248 g of HAA, what is the molar mass of unknown amino acid
tino4ka555 [31]

Answer:

75.15 g/mol

Explanation:

First, let us look at the equation of reaction;

NaOH + HAA --> NaAA + H_2O

From the balanced equation of reaction, 1 mole of NaOH is required to completely neutralize 1 mole of HAA.

Recall that: mole = molarity x volume.

Therefore, 27.50 mL, 0.120 M NaOH = 0.0275 x 0.120 = 0.0033 moles

0.0033 mole of NaOH will therefore requires 0.0033 moles of HAA for complete neutralization.

In order to find the molar mass of the unknown amino acid, recall that:

<em>mole = mass/molar mass</em>, hence, <em>molar mass = mass/mole</em>.

Therefore, molar mass of HAA = 0.248/0.0033 = 75.15 g/mol

6 0
3 years ago
Knowing the chemical properties of a substance will tell you how a substance
Talja [164]
This can tell you alot. its about what you are learning but it can affect the way that the substance bonds to others or how high the boiling and melting point are. hope this helps some.
5 0
3 years ago
Define the term ionization energy. Choose one:
olga nikolaevna [1]

Answer:

A. The amount of energy needed to remove 1 mole of electrons from 1 mole of ground-state atoms or ions in the gas phase.

Explanation:

Ionization energy is the quantity of energy required to remove an electron in ground electronic state from an isolated gaseous atom or ion, resulting in a cation.  kJ/mol is the expresion we use for this energy, it refers to the amount of energy it takes for all the atoms in a mole to lose one electron each.

 Ionization energy can be used as an indicator of reactivity and can be used to help predict the strength of chemical bonds because the more electrons are lost, the more positive the ion will be and the harder it will be to separate the electrons from the atom.

I hope you find this information useful and interesting! Good luck!    

8 0
3 years ago
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