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
Alecsey [184]
3 years ago
6

HELP please quick HELP

Chemistry
1 answer:
stiks02 [169]3 years ago
4 0
What do you  need help with
You might be interested in
How many protons,neutrons and electrons are present in an atom of hafnium,hf,with a mass number of 178?
AleksAgata [21]
178 of each species
178 protons
178 neutrons
And 178 electrons
7 0
4 years ago
Read 2 more answers
Two posssible lewis structures for the molecule ch2s are given. determine the formal charge on each atom in both structures
jok3333 [9.3K]

The formal charge on each atom can be known by counting up the number of valence electrons that is present on each atom.

<h3>What is Lewis structure?</h3>

The term Lewis structure is the representation of a compound using its symbols and showing the valence electrons as dots. This question is incomplete as the Lewis structures were not shown.

If it is shown, we can know the formal charge on each atom by counting up the number of valence electrons that is present on each atom.

Learn more about Lewis structure: brainly.com/question/4144781

8 0
2 years ago
I NEED HELP FAST!!!!! Can you tell me about examples of elements compounds and mixtures??? I have a DBA in a few minutes and I d
Jet001 [13]
Okay Elements can combine to created element compounds a few examples can be lets say Gold(Au) Is an example of an Iconic Compound (usually a common compound). An Element Mixture is literal a mixture Ex. Brass. Brass is usually 10% copper and 45% zinc. So in order to get Brass you must physically m<span />ix copper with zinc and the other metal (sorry i don't remember the name) Also mixtures tend to not be chemically constant, this is because it was physically mixed rather than all of the atoms be the same if they were chemically combined.
3 0
4 years ago
Until the 1960s, it was widely believed that the Moon was made of material that was flung off Earth during a time when it was ra
zysi [14]

E

All the other chices give evidence that supports that hypothesisthat the Moon was made of material that was flung off Earth during a time when it was rapidly spinning.

Explanation:

There is an enormous amount of similarities between the minerals in the moon rocks and the rocks on earth, except that for some minerals, like potassium, their quantities are higher on the earth than on the moon.

However, there is still supports for the evidence (by the other choices) that the moon was made from a piece of earth ejected from asteroid impact in primordial earth.Explanation:It’s believed that more than 3.5 billion years during the formation of earth and before it had cooled there were frequent asteroid impacts and one enormous collision ejected a large piece of molten earth into space but within earth’s gravity influence. This piece formed the moon. Evidence of asteroid impacts are frozen in time on the moon surface thanks to the fact that the moon has no atmosphere or tectonic plates movements that wipe off this ‘evidence’.

Learn More:

brainly.com/question/12718187

#LearnWithBrainly

8 0
3 years ago
Read 2 more answers
How do the isotopes carbon-13 and carbon-14 differ?"
andreyandreev [35.5K]

Answer:

Carbon exists in several isotopes. ... Carbon-12 has 6 neutrons, carbon-13 has 7 neutrons, and carbon-14 contains 8 neutrons. Carbon-12 and 13 are stable isotopes, which means that the nucleus does not undergo radioactive decay. Carbon-14 possesses an unstable nucleus which undergoes radioactive decay.

Explanation: Trust me :)

8 0
3 years ago
Other questions:
  • How were fossil symbols and mountain belts helpful in deciding where to move the continents
    9·1 answer
  • 30 Points!! 15 Each Points Please Help ASAP!! View Attached Image!! Will Mark Brainliest If All Are Answered!!
    14·2 answers
  • A 70 N force pulls a box straight up 5 m above the ground. How much work is done on the box?
    9·1 answer
  • Gram mass formula of glycine
    13·1 answer
  • Is a chair an example of matter
    6·2 answers
  • HELP WITH FINAL CHEM
    13·1 answer
  • Can someone please help i’m on my final test trying to pass
    12·1 answer
  • Can anyone help me with this algebraic expression<br><br>(4a+3b)² (3a-4b)²​
    6·2 answers
  • Time left 0:40:19
    9·1 answer
  • You find a mysterious white powder in your kitchen. It could be cream of tartar (pH=5), sugar (pH=7), baking soda (pH=8), or dra
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!