1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
natali 33 [55]
3 years ago
7

In the periodic table hydrogen is placed in Group 1A (group 1) and helium is placed in Group 8A (group 18). The most likely reas

on for this is:
Chemistry
1 answer:
Alexus [3.1K]3 years ago
8 0

Answer:

This question appears incomplete

Explanation:

This question appears incomplete because of the absence of options. However, hydrogen is placed in group 1 because it has just one electron in it's outermost shell (which happens to be the only shell it has) just like every other group 1A/group 1 element. While helium is placed in group 8A/group 18 because it has a completely filled outermost shell (which is also the only shell it has) just like every other element in group 8A/group 18.

You might be interested in
Aluminum has a density of 2.70 g/mL. A sample of aluminum weighs 67.5 g. If this sample is put into a graduated cylinder that ha
romanna [79]

Answer:

60 ml

Explanation:

Now, we know that density = mass/volume

Mass of aluminium = 67.5 g

volume of aluminium =?

density of aluminium = 2.70 g/mL

volume of aluminium = mass/density = 67.5/2.70 = 25 ml

Since volume of water in the cylinder = 35 ml

The water rises to ; 35 ml + 25 ml = 60 ml

4 0
2 years ago
What kinds of information does a structural formula reveal about the compound it represents
stiv31 [10]

Answer:

In organic chemistry, the structural formula shows the bonding and general layout of the molecule.

Explanation:

It can also help in naming the molecule, as many compounds with the same molecular formula have different structural formulas, for example cycloalkanes and alkenes, or aldehydes and ketones.

It tells us about the constituents of the compound, or in other words, the functional groups present. This enables us to predict what kind of properties the compound has and what kind of reactions it can undergo.

It can also help us determine the stereochemistry (shape and spatial orientation) of the compound. This is especially important in organic chemistry and organic chemstry, since certain important reactions will proceed if and only if a molecule with the right shape is employed.

6 0
3 years ago
PLEAS HELP ASAP!!! Which of these statements best explains why the running costs for geothermal power plants are very low?
natima [27]
Correct answer is <span>Fuels do not have to be purchased to generate power.</span>
4 0
3 years ago
1. Explain why the cold water and hot water in Part 1 moved the way they did within the tub of
neonofarm [45]

Answer:

Cooling a substance causes molecules to slow down and get slightly closer together, occupying a smaller volume that results in an increase in density. Hot water is less dense and will float on room-temperature water. <u>Cold water is more dense and will sink in room-temperature water.</u>

<u></u>

5 0
3 years ago
A _______ reaction is when a compound containing carbon and hydrogen (and sometimes oxygen) combines with oxygen gas to produce
ch4aika [34]
This is categorized as a combustion reaction.
6 0
3 years ago
Other questions:
  • Indicate what type, or types, of reaction each of the following represents: (a) H2 O(g) + C(s) ⟶ CO(g) + H2 (g) (b) 2KClO3 (s) ⟶
    13·1 answer
  • Which of the following locations would most likely have the most fertile soul?
    8·1 answer
  • The fluoride rinse in dental offices usually contains sodium fluoride. Sodium fluoride can be prepared from the reaction between
    15·2 answers
  • What compotent of air is least nessasery for life on earth
    12·1 answer
  • Describe, in detail, two real world applications of radiation.
    15·2 answers
  • Calculate the relative molecular mass of C2H2O42H2O​
    15·1 answer
  • What does the smoke in the tube prove scientifically?/
    5·1 answer
  • All bases dissociate<br> True or false
    14·1 answer
  • How many grams of glucose (C6H12O6) are contained in 555 mL of a 1.77 M glucose solution?
    12·1 answer
  • Describe what happens on the molecular level when acetic acid dissolves in water.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!