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Sholpan [36]
3 years ago
13

What is a common feature of elements in group 1, group 2 and group 3?​

Chemistry
2 answers:
Papessa [141]3 years ago
8 0

Answer:

all of them have seven valence electron

Jobisdone [24]3 years ago
8 0
Group 1 has 1 valence electron

Group 2 has 2 valence electrons

Group 3 has 3 valence electrons

Thus, they all give electrons instead of taking like a noble gas does when satisfying the octet rule.

All of these groups have positive charges (i.e., +1, +2, +3).
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According to the United States Department of Agriculture (USDA), Texas had 4 , 015 , 000 beef cows in 2013 . If one cow produces
marishachu [46]

Answer:

3.00 × 10¹¹ g

Explanation:

According to the United States Department of Agriculture (USDA), Texas had 4,015,000 beef cows in 2013. One beef cow produces 205 grams of methane per day. The methane produced by the beef cows in Texas per day is:

4,015,000Cow \times \frac{205gCH_4}{cow \times day} = \frac{8.23 \times 10^{8}gCH_4}{day}

Each year has 365 days. The methane produced by the beef cows in Texas per year is:

\frac{8.23 \times 10^{8}gCH_4}{day} \times \frac{365day}{1y} = 3.00 \times 10^{11}gCH_4

5 0
3 years ago
During this chemical reaction energy is absorbed. In the chemistry lab, this would be indicated by a decrease in temperature or
Semmy [17]

Reactions like this one absorb energy because the reactants have less potential energy than the products.

<h3>What is an Endothermic reaction?</h3>

This is the type of reaction in which the reactants absorb heat energy from the surroundings to form products.

This brings about a decrease in the temperature as a result of the reactants having less potential energy than the products thereby making option B the most appropriate choice.

Read more about Endothermic reaction here brainly.com/question/6506846

8 0
2 years ago
How are rain hail and snow formed
zavuch27 [327]
When cloud particles become too heavy to remain suspended in the air, they fall to the earth as precipitation. Precipitation occurs in a variety of forms; hail, rain, freezing rain, sleet or snow.
When the temperature is too hot for snow it'll rain and if the tempature is too cold it will freeze the rain and that's how you get snow or hail.

Hope this helped :)
Have a great day
7 0
3 years ago
What kind of crystalline solid is copper? <br> PLS HELP
NISA [10]
Answer: metallic solid

Explanation:
Copper is a metallic crystalline solid. A metallic solid is an element that can withstand high temperatures and conduct electricity.
8 0
3 years ago
Which type of reaction is caused by particle accelerators?
vivado [14]
The type of reaction caused by particle accelerators is called photo-fission reaction
6 0
4 years ago
Read 2 more answers
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