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
mezya [45]
3 years ago
11

#18: all atoms of the same element have the same a)number of neutrons b)atomic number

Chemistry
1 answer:
romanna [79]3 years ago
4 0
Number of neutrons.
The atomic number is a way of identifying elements so if the were all the same than that wouldn't work very well :)
You might be interested in
Radium has a half-life of 1,620 years. In how many years will a 1 kg sample of radium decay and reduce to 0.125 kg of radium?
Tasya [4]
We can calculate years by using the half-life equation. It is expressed as:

A = Ao e^-kt

<span>where A is the amount left at t years, Ao is the initial concentration, and k is a constant.

</span>From the half-life data, we can calculate for k.

1/2(Ao) = Ao e^-k(1620)
<span>k = 4.28 x 10^-4
</span>
0.125 = 1 e^-<span>4.28 x 10^-4 (</span>t)
t = 4259 years
7 0
3 years ago
Read 2 more answers
What scientific instrument is sensitive enough to detect a planet transiting a star?
Stolb23 [73]
The correct scientific instrument is telescope.
5 0
3 years ago
Justify the statement nuclear energy is harmful as well as useful
dmitriy555 [2]

  • The beneficial effects of nuclear energy is usually overlooked because of its potentially devastating side-effects

7 0
2 years ago
PLEASE HELP ASAP!!! science
Ksju [112]

Answer:

It's the oesophagus.

Explanation:

The worm digestive system consists of the pharynx, the esophagus, the crop, the intestine and the gizzard. The oesophagus is not mentioned. Thus, it's not part of the worm digestive system.

8 0
3 years ago
Read 2 more answers
What is the total number of atoms of magnesium and phosphorus in 3Mg3(PO4)2?
JulsSmile [24]
Since the given formula is . According to cross method formula, magnesium has +2 charge so, is multiplied by 2.
Thus, 1 molecule of magnesium phosphate will contain 2 atoms of phosphorus.
Therefore, three molecules of magnesium phosphate contains following number of atoms.
Mg = 9
P = 6
O = 24
Hence, we can conclude that there are 6 atoms of phosphorus in three molecules of magnesium phosphate, .
4 0
3 years ago
Other questions:
  • W myFLVS
    14·1 answer
  • Based on the reaction, identify the product.
    12·2 answers
  • Write the acidic equilibrium equation for HPO42
    7·1 answer
  • A.Identify which of the following substances dissolve in water, explaining why for each example: CH4, He, MgSO4, NaHCO3
    9·2 answers
  • Which ketone in each pair is more reactive?
    15·1 answer
  • -The picture goes to Activity 2
    14·2 answers
  • HELP 20 POINTS
    14·1 answer
  • The mass of 0.10 mole of methane
    6·1 answer
  • Label the molecular view.
    5·1 answer
  • What is the empirical formula for a compound if a sample contains 1.0 g of S and 1.5 g of O?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!