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kenny6666 [7]
3 years ago
10

The number of valence electrons for 1s22s22p4 is:

Chemistry
1 answer:
Ugo [173]3 years ago
8 0

Answer:

The answer is 6 valance electrons because it is oxygen and oxygen needs two more electrons to be a noble gas

Explanation:

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You examine an ice core sample from 10,000 years ago when global temperatures were unusually high. Based upon past studies and i
Tom [10]

Methane was unusually high is the correct option. Hence, option B is correct.

<h3>What is methane?</h3>

Methane is the simplest member of the paraffin series of hydrocarbons and is among the most potent greenhouse gases. Its chemical formula is CH_4.

As the ice compacts over some time, tiny bubbles of the atmosphere or surroundings including greenhouse gases like carbon dioxide and methane—press inside the ice. These air pocket “fossils” give samples of what the atmosphere was kind when that layer of ice formed.

Based upon past studies and insights from current GHG levels, we assume that atmospheric levels of carbon dioxide and methane were unusually low.

Learn more about methane here:

brainly.com/question/2127750

#SPJ1

4 0
2 years ago
A sample of kerosene has a mass of 36.4g. It’s volume is 45.6mL. What is the density of kerosene?
stira [4]

Answer:

<h2>Density = 0.8 g/cm³</h2>

Explanation:

The density of an object can be found using the formula

<h3>Density(\rho) =  \frac{mass}{volume}</h3>

From the question

mass of kerosene = 36.4 g

volume of kerosene = 45.6 mL

To find the density substitute the values into the above formula and solve

We have

<h3>Density =  \frac{36.4}{45.6}</h3>

= 0.7982

We have the final answer as

<h3>Density = 0.8 g/cm³</h3>

Hope this helps you

4 0
3 years ago
What unit do we use to measure work?<br><br> A Grams<br> B joules <br> C Newton’s
vladimir1956 [14]

Answer:

B

Explanation:

4 0
4 years ago
Please help i got no clue how to do dis
mamaluj [8]

Answer:

Sulfur's Atomic #: 16

Fluorine's Atomic #: 9

Antimony's Atomic #: 51

Silver's Atomic #: 47

Rubidium's Atomic #: 37

Copper's Atomic #: 29

Tin's Atomic #: 50

Mercury's Atomic #: 80

Promethium's Atomic #: 61

3 0
3 years ago
What are all the products of a hydrocarbon combustion reaction?
notsponge [240]

Answer:

What are all the products of a hydrocarbon combustion reaction?

A. Carbon dioxide, water vapor, and heat

xXxAnimexXx

3 0
3 years ago
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