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Zigmanuir [339]
3 years ago
15

Why do you need a correct lewis structure before you can use vsepr to predict a molecules geometry.

Chemistry
1 answer:
JulsSmile [24]3 years ago
4 0

Answer:

so the answer that you get isn't wrong? i dont know

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If ethanol has a density of 0.785g/mL, calculate the volume of 83.7 g of ethanol.
ratelena [41]

Answer:

<h2>106.62 mL</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density} \\

From the question

mass = 83.7 g

density = 0.785 g/mL

We have

volume =  \frac{83.7}{0.785}  \\  = 106.62420

We have the final answer as

<h3>106.62 mL</h3>

Hope this helps you

8 0
3 years ago
Which TWO of the following options are TRUE about atomic mass and mass number?
Citrus2011 [14]

Answer:

E - Atomic mass is calculated by weighted atomic average using all the isotope data available.

G - Mass number is equal to the sum of protons and electrons in an atom.

Explanation:

Take an element

\\ \bull\sf\longmapsto _{25}Mg^{12}

  • Mass no is 25 and atomic no is 12.
7 0
3 years ago
A substance that contains hydrogen that may be replaced by a metal is a/an
vovangra [49]
The substance that contains hydrogen that may be replaced by a metal is an acid~
3 0
3 years ago
Read 2 more answers
en un recipiente se tiene 800 g de una solución al 35% en masa de ácido sulfuroso, de la cual se evapora 80ml de agua. ¿cuál es
Alinara [238K]

The mass percent of sulfurous acid in the new solution : 38.9%

<h3>Further explanation</h3>

<em>In a container you have 800 g of a 35% by mass solution of sulfurous acid, from which 80 ml of water evaporates. What is the mass percent of sulfurous acid in the new solution? data: density of water is 1g / ml.</em>

<em />

solution 1

composition :

  • 35% acid :

\tt 0.35\times 800~g=280~g

  • water :

\tt 800-280=520~g

solution 2(new solution)

composition :

  • water

\tt 520-(80~ml\times 1~g/ml)=440~g

  • Total mass of new solution after water evaporated

\tt 280(acid)+440(water)=720~g

  • %mass of acid in a new solution

\tt \dfrac{280}{720}\times 100\%=38.9\%

5 0
3 years ago
Which method is the typical first step when scientists communicate their scientific results?
hodyreva [135]
Purpose
prediction
procedure
data
calculation
conclusion - results etc.
5 0
3 years ago
Read 2 more answers
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