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
Mars2501 [29]
3 years ago
10

Plsss help with this ASAP TT

Chemistry
1 answer:
PSYCHO15rus [73]3 years ago
7 0

Answer: lithium- 3 protons, 3 electrons, 3 neutrons

Oxygen- nucleon no. 16, Atomic no. 8, 8 protons, overall charge (-2)

Sorry I don't the others. Hope this helps

You might be interested in
Why is sodium chloride not considered a molecular compound? What kind of compound is it?
e-lub [12.9K]

Answer:

Something like table salt (NaCl) is a compound because it is made from more than one kind of element (sodium and chlorine), but it is not a molecule because the bond that holds NaCl together is an ionic bond. If you like, you can say that sodium chloride is an ionic compound.

Explanation:

5 0
2 years ago
If there is currently 50kg of U-235 present in Oklo, how much must have been present 750 million years ago when the reaction too
Viefleur [7K]
To answer this question, you need to know the concept of half-life, which is how a radioactive material decreases in mass over time.

The half life of U-235 is 703.8 million years. The first part of this problem is to find the scale factor. To do this, divide the time that has past by the half life, like this:

\frac{750}{703.8}  = 1.066
Now, take this scale factor and multiply it by the current mass, like this:

50 \times 1.066 = 53.3
This number is what you add to the current mass to get the original mass. That is because the scale factor showed us that it was just over one half life. Since after one half life, the mass is cut in half, and this is over one half life, when we add to the original it will be a little over double. This equation illustrates the final addition:

50 + 53.3 = 103.3
I hope this helped you. Fell free to ask any further questions.
7 0
3 years ago
How many molecules are in 120 grams of Na2SO4
brilliants [131]

3.06 × 10^23 molecules

5 0
3 years ago
KOH +HBr KBr+ H2O<br><br> Which is the acid in this reaction?
Allisa [31]

Answer:

HBr Potassium bromide

5 0
3 years ago
Read 2 more answers
Why is aluminium used to make outer covering of aeroplane?
iogann1982 [59]

Answer:

Aluminum is ideal for aircraft manufacture because it's lightweight and strong. Aluminum is roughly a third the weight of steel, allowing an aircraft to carry more weight and or become more fuel efficient. Furthermore, aluminum's high resistance to corrosion ensures the safety of the aircraft and its passengers.

Explanation:

8 0
3 years ago
Other questions:
  • Which of these accurately describes the reactants of a reaction?
    5·2 answers
  • How many electrons are necessary to produce a charge of -0.90 c ?
    12·1 answer
  • Consider the partial equation. Br2 + NaF mc026-1.jpg Which best completes the chemical equation? no reaction Na + FBr2 NaBr + F2
    10·2 answers
  • In simple summary form, the input of the Calvin cycle for every product is __________, and the output is __________ used for glu
    15·1 answer
  • Explain the differences among nonpolar covalent bonds, polar covalent bonds, and ionic bonds.
    7·1 answer
  • A) accelerated upward. B) slowed and then stopped. C) moved at a constant velocity. D) increased its speed rapidly.
    14·1 answer
  • If 20.60 ml of 0.0100 m aqueous hcl is required to titrate 30.00 ml of an aqueous solution of naoh to the equivalence point, wha
    7·2 answers
  • How do you find moles
    5·2 answers
  • Match the number of neutrons to the correct isotope by studying the atomic number and mass number of each isotope. Drag the item
    9·1 answer
  • How does light interact with materials
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!