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
Alborosie
3 years ago
9

HELP HELP ME PLSS

Chemistry
1 answer:
Akimi4 [234]3 years ago
6 0

Answer:

the average answer in maybe 60

You might be interested in
How would Lithium gain full valence levels
Lubov Fominskaja [6]

Answer:

In order to have a full outer shell atoms can GAIN or LOSE electrons. Atoms with very few VALENCE electrons, such as Lithium, would need to gain many electrons for a full shell so it is easier for them to LOSE electrons and become POSITIVE.

Explanation:

- I hope this helped!

8 0
3 years ago
Use the helium-4 isotope to define atomic number and mass number. why does knowledge of atomic number enable us to deduce the nu
Nuetrik [128]
Helium - 4 isotope has 2 protons and 2 neutrons.

Its atomic number is 2 (the number of protons). Atomic number is the number of protons in the atom of an element and it identifies the element. All the isotopes of an element have the same atomic number (same number of protons). So, all the isotopes of hellium have 2 protons.

The number 4 that identifies the helium - 4 isotope is the mass number, i.e. the number of protons plus the number of neutron. So, helium-4 isotope has 2 protons and 2 neutrons. While, other isotopes of helium have 2 protons but different number of neutrons.

The atomic number enable us to deduce the number of electrons in an atom because the atoms are neutral, which implies that the positive and negative charge are equal. Given that the magnitude of the charge of electons and protons are equal but the sign is opposed (protons are positve and electrons are negative) the number of electrons in the atom equals the number of protonts. That is why the atomic number is also the number of electrons of the atom.
8 0
3 years ago
A 10kg bowling ball would require what force to accelerate down an alleyway at a rate of 3m/s2?
mixas84 [53]
Ok so this all boils down to Newton's second law

Force = mass X acceleration 

 so the force = 10 X 3 = 30N 
8 0
3 years ago
A liquid at room temperature with high vapor pressure has:
Elanso [62]
It’s B because of the quest
8 0
3 years ago
PLEASE HELP!!!!! I need help with this question!
Ivahew [28]

Answer:

Exothermic Reaction

Explanation:

Its a combustion reaction and they are always exothermic in nature.

8 0
3 years ago
Other questions:
  • How many grams of chlorine must be added to a balloon containing 8.00 grams of helium to double its volume?
    14·1 answer
  • A manufacturer of trophies wants to cover a trophy made of tin with thin layers of silver and gold. Which of the following proce
    5·2 answers
  • A golden nugget displaces 89.60 mL of water when submerged. If the density of gold is 19.32 g/cm² what is the mass of the nugget
    14·1 answer
  • Suppose that in a particular reaction 10.5 grams of HCl (36.5 g/mol) react with excess NaOH and 19.3 grams of NaCl (58.5 g/mol)
    13·1 answer
  • How many atoms are in 10 g of O
    14·1 answer
  • Sodium is a soft, white metal that reacts violently with water. Chlorine is a poisonous yellow-green gas. During the chemical re
    15·1 answer
  • Please someone help or tell me the answer for number 2 its a quiz grade
    10·1 answer
  • 5. A sample of carbon dioxide (CO2) has a mass of 52.0 g.<br> a. How many carbon atoms are present?
    15·1 answer
  • T or F? Sometimes energy is lost during a chemical reaction.
    11·2 answers
  • A 19.5-mL sample of Ba(OH)2 is titrated with HCl. If 28.4 mL of 0.394 M HCl is needed to reach the endpoint, what is the concent
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!