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mafiozo [28]
3 years ago
7

What are eight elements named after towns

Chemistry
1 answer:
maxonik [38]3 years ago
5 0
1. Berkelium(Berkeley, CA) 2. Dubnium(Dubna, Russia) 3. Darmstaditum (Darmstadt, Germany) 4. Erbium(Ytterby, Sweden) 5. Strontium(Strontian, Scotland) 6. Terbium(Ytterby, Sweden) 7. Yttebium(Ytterby, Sweden) 8. Yttrium(Ytterby, Sweden)
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Match each element to the number of electrons in its valence shell.
irinina [24]

Answer:

C: 4

H: 1

Mg: 2

O : 6

Explanation:

You can quickly find out the number of valence electrons by looking at where the element is on the periodic table and referring to the table that is attached.

6 0
1 year ago
2. How would a thermometer that measures
ElenaW [278]
Two very big differences between Kelvin and Celsius: 1. Kelvin has no negative numbers, 2. All Celsius amounts are 273 degrees less than it’s equal kelvin amount
8 0
3 years ago
Which term is used to describe the reactant that is used up completely and controls the amount of product that can be produced d
givi [52]

Answer: Option (c) is the correct answer.

Explanation:

A limiting reagent is defined as a reagent that completely gets consumed in a chemical reaction. A limiting reagent limits the formation of products.

For example, we have given 5 mol of A and the reaction is 2A + 4B \rightarrow 2AB

Whereas when 4 mol B will react with 2 mol of A. Hence, 8 mol of B will react with 4 mol A as follows.

                        \frac{2}{4} \times 8 = 4 mol

As, the given moles of A is more than the required moles. Thus, it is considered as an excess reagent.

Hence, B is a limiting reagent because it limits the formation of products.

Thus, we can conclude that limiting reactant is the term used to describe the reactant that is used up completely and controls the amount of product that can be produced during a chemical reaction.  

6 0
3 years ago
How many atoms of nitrogen are present in 2.49 moles of nitrogen trifluoride ? atoms of nitrogen?
stepladder [879]
<span>Nitrogen trifluoride - NF3.
1 mol NF3 contains 1 mol atoms of Nitrogen
2.49 mol NF3 contains 2.49 mol atoms of Nitrogen

1 mol   ----  6.02 *10²³ atoms
2.49 mol ----- 2.49*6.02*10²³ = 15.0*10²³ atoms of N</span>
6 0
3 years ago
Is a caterpillar a consumer
KonstantinChe [14]
The answers yes because it consumes leaves.
5 0
4 years ago
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