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stiks02 [169]
3 years ago
11

The Lewis structure of an oxygen atom should have _____________ dots drawn around the symbol .The Lewis structure of a calcium a

tom should have ____________ dots drawn around the symbol Ca. The Lewis structure of a nitrogen atom should have ___________ dots drawn around the symbol N. The Lewis structure of an aluminum atom should have ___________ dots drawn around the symbol Al. The Lewis structure of a fluorine atom should have _________ dots drawn around the symbol F.
Chemistry
1 answer:
nydimaria [60]3 years ago
4 0

Answer:

Oxygen- 6

Calcium-2

Nitrogen-5

Aluminum-3

Flourine-7

Explanation:

A Lewis structure or dot electron structure is a representation of an atom in which the valence electrons on the outermost shell of the atom are represented as dots.

These dots show the number of valence electrons as well as the group to which the atom belongs in the periodic table.

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AgI + KNO3<br>What type of reaction is this?
emmasim [6.3K]

Answer:

double replacement

Explanation:

4 0
3 years ago
The mass of an erlenmeyer flask is 85.135 g. after 10.00 ml of water is added to the flask, the mass of the flask and the water
BARSIC [14]
Subtracting the mass of (flask+water) from the empty flask gives:
95.023 g - 85.135 g = 9.888 grams of water
Dividing this by the given volume of 10.00 mL water gives:
9.888 grams of water / 10.00 mL of water = 0.9888 g/mL of water
Therefore, based on this sample, the density of water is 0.9888 g/mL, which is close to the usually accepted approximation of 1 g/mL.
4 0
3 years ago
molecules with a plane of symmetry between the chiral centers are achiral and meso. identify which of the following molecules ar
maks197457 [2]

Molecules with a plane of symmetry between the chiral centers are achiral and meso. From the given molecules (Picture attached) only (A) compound 1 is meso.

When compounds possess a plane of symmetry between the chiral centers they are called achiral or meso compounds. Among the given compounds (A) compound 1 have a plane of symmetry. So we can say compound one is a meso or achiral compound. Compounds two, three, and four have no plane of symmetry, as you can see in the structures attached. So all other compounds (compound 2, compound 3, and compound 4) except compound one are not meso or achiral.

You can also learn about meso compounds from the following question:

brainly.com/question/29022658

#SPJ4

7 0
1 year ago
You have selected your two primers and added all of the PCR components to a test tube. Use the answer choices [A-C] to explain w
tankabanditka [31]

Hi. You did not provide any response options. However, a PCR reaction proceeds as follows.

After the primers are added to the test tube containing the PCR components. This tube is placed in a device called a thermocycler. At that moment, the stage called denaturation will begin, where the thermocycler increases the temperature to the point of breaking the hydrogen bonds that hold the two strands of DNA together. The thermal cycler increases the temperature up to 96°C.

After that, the second step of the reaction begins. At that moment, the thermal cycler lowers the temperature to 55º - 65ºC, which is the ideal temperature for the primers to be able to attach themselves to the DNA strands, preparing them for the presence of the polymerase.

After that, the thermocycler raises the temperature to 72ºC, which is the ideal temperature for the DNA polymerase to work. At this stage, the DNA polymerase will use the DNA strand and the primer to build a new DNA strand, which will be annealed to the DNA strand used as a template.

These three steps will be repeated about 35 times, generating many copies of DNA.

7 0
3 years ago
WILL GIVE 100 POINTS PLEASE HELP EMERGENCY NEED CORRECT ANSWERS
zubka84 [21]

Answer:

6. 13.8 moles

7. 0.751 moles

8. 2.04 moles

9. 0.00794 moles

10. 0.158 moles

Explanation:

3 0
3 years ago
Read 2 more answers
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