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guajiro [1.7K]
4 years ago
5

What is the distance from one crest to the next crest is the??

Chemistry
2 answers:
slega [8]4 years ago
7 0
The distance from one crest to another crest or from one trough to another trough is called wavelength. Hope it helps
Zarrin [17]4 years ago
4 0

Answer:

wavelength

Explanation:

The distance from one crest to the next crest is called the <u>wavelength</u>.

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Root nodules are associations between bacteria and plant roots responsible for
max2010maxim [7]

Answer: Root nodules are associations between bacteria and plant roots responsible for nitrogen fixation.

Explanation:

  • As nitrogen present in atmosphere cannot be used by plants directly.
  • Nitrogen present in atmosphere is converted into nitrogen compounds by bacteria which is present in root nodules of a plant.
  • These compounds of nitrogen are then used by plants for various functions.
8 0
3 years ago
In the reaction 2 c o2 → 2 co, how many moles of carbon are needed to produce 66.0 g of carbon monoxide
weeeeeb [17]

The solution would be like this for this specific problem:

<span>Given:

</span>66.0 g of carbon monoxide

reaction 2 C + O2 → 2 CO

 

<span>mol e= mass / molar mass <span>
<span>mole of 2CO = 66.0g / (12.011  15.999)g / mol </span>
mole of 2CO = 2.36 (CO and C has a 1:1 mole ratio) 

mole of 2CO = 2.36 -> mole of 1 CO = 2.36 / 2 = 1.18 

<span>We got 2 moles of C, thus 1.18 x 2 = 2.36

So, we 2.36 </span>moles of carbon are needed to produce 66.0 g of carbon monoxide in the </span>reaction 2 C + O2 → 2 CO.</span>   <span>To add, Carbon nonmetallic and tetravalent, thus, making four electrons available to form covalent chemical bonds. </span>
6 0
3 years ago
What 4 elements whose isotopes have a half-life of more than one year?​
Oliga [24]
Bismuth-209 (209Bi) is the isotope of bismuth with the longest known half-life of any radioisotope that undergoes α-decay (alpha decay). It has 83 protons and a magic number of 126 neutrons, and an atomic mass of 208.9803987 amu (atomic mass units). Of the first 82 elements in the periodic table, 80 have isotopes considered to be stable.[1] The 83rd element, bismuth, was traditionally regarded as having the heaviest stable isotope, bismuth-209, but in 2003 researchers in Orsay, France, measured the half-life of 209
Bi
to be 1.9×1019 years.[2][3] Technetium and promethium (atomic numbers 43 and 61, respectively[a]) and all the elements with an atomic number over 82 only have isotopes that are known to decompose through radioactive decay. No undiscovered elements are expected to be stable; therefore, lead is considered the heaviest stable element. However, it is possible that some isotopes that are now considered stable will be revealed to decay with extremely long half-lives (as with 209
Bi
). This list depicts what is agreed upon by the consensus of the scientific community as of 2019.
6 0
3 years ago
Part 2. Solve the following problems and round to the correct number of significant figures.
ANTONII [103]

Answer:

1. 749.6

2. 159.8

3. 60.4

4. 19,840,275

5. 8.029118938015202

6. 267.984

7.  1,017.169517

8.  45,945

9.   28,710

10.  14.42169022209403

11.    0.1341

and that is all that I am going to give you for the last few try to use a calculator    

Explanation:

use a calculator

4 0
3 years ago
Is length an extensive or intensive physical property?
kati45 [8]

Answer:

The answer to your question is length is an extensive property

Explanation:

There are two physical properties: extensive and intensive properties.

An extensive property is a property that depends on the amount of matter.

An intensive property is a property that does not depend on the amount of matter.

7 0
3 years ago
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