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3 years ago

Ionic formula for ethanoate ion

1 answer:

4 0

Nomenclature and common formula. When part of a salt, the formula of the acetate ion is written as CH3CO2−, C2H3O2−, or CH3COO−. Chemists abbreviate acetate as OAc− or, less commonly, AcO−. Thus, HOAc is the abbreviation for acetic acid, NaOAc for sodium acetate, and EtOAc for ethyl acetate.

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The Lewis dot model of a molecule is shown.

Katen [24]

Answer:

Carbon has a total of four bonded pairs of electrons around it.

Explanation:

Since there are four "lines" around the C (which stands for Carbon), we can conclude that Carbon has a total of four bonded pairs of electrons around it.

3 0

3 years ago

Given that 0.40 mols of NaCl was dissolved in water to create a

Marina86 [1]

2.86 is the rong answer

4 0

1 year ago

I need help with 17

Nezavi [6.7K]

Answer and explanation:

A chemical change occurs when new substances or materials are produced to have different chemical properties from the reactants.

Some examples of this are paper burning, fruit rotting, and metal rusting.

8 0

3 years ago

Which of the following statements best describes the properties of aluminum-28?

Contact [7]

d. When aluminum-28 undergoes beta decay, silicon-28 is produced.

Explanation:

When the nuclei of aluminium-28 decays, it produces silicon- 28:

Aluminium ²⁸₁₃Al

Silicon 28 ²⁸₁₄Si

beta particle ⁰₋₁ $\beta$

²⁸₁₃Al → ²⁸₁₄Si + ⁰₋₁ $\beta$

This way, the mass and atomic number are conserved.

Conservation of mass number:

28 = 28 + 0, 28 = 28

13 = 14 -1 , 13 = 13

Learn more:

Balancing nuclear equations brainly.com/question/10094982

#learnwithBrainly

5 0

3 years ago

What is the frequency of a photon of light (in Hz) that has an energy of 2.50 x 10-18 J?

ohaa [14]

Answer:

The answer is

$3.77 \times {10}^{15} \: \: \: Hz$

Explanation:

The frequency of the photon can be found by using the formula

$f = \frac{E}{h} \\$

where

E is the energy

f is the frequency

h is the Planck's constant which is

6.626 × 10-³⁴ Js

From the question

E = 2.50 × 10^-18 J

So we have

$f = \frac{2.50 \times {10}^{ - 18} }{6.626 \times {10}^{ - 34} } \\$

We have the final answer as

$3.77 \times {10}^{15} \: \: \: Hz$

Hope this helps you

5 0

2 years ago