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Travka [436]
2 years ago
15

What is the rule for determining the mass of an atom

Chemistry
1 answer:
Elena-2011 [213]2 years ago
5 0

Answer:

For any given isotope, the sum of the numbers of protons and neutrons in the nucleus is called the mass number. This is because each proton and each neutron weigh one atomic mass unit. By adding together the number of protons and neutrons and multiplying by 1, you can calculate the mass of the atom.

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In three to five sentences, identify two components of the control subsystem of a vehicle, and use them
tekilochka [14]

Answer:

The control subsystem of a vehicle can have several parts. Two examples are the braking and steering wheel. If the subsystem were to malfunction, driving could potentially be dangerous due to the fact that the car could go out of control and make an impact on another car. For example, if the brakes aren’t working you cannot stop the vehicle in time and if the steering wheels went you can’t move the vehicle.

3 0
1 year ago
Two knots is equal to:
Sloan [31]

Answer:

2.30156

Explanation:

6 0
2 years ago
Read 2 more answers
Which of these statements is correct? a. Particles in a suspension will settle out if left undisturbed. b. A solution is heterog
tatuchka [14]

Blood. It is discrete cells in saline solutuion. The cells are free to move thru the plasma, or you wouldn't have blood flow, or oxygenation, and you would die. Blood is defined as liquid, not jello.


The other three are things not normally associated--water will fall from the sky as rain, for example, but is held in suspension in fog. Same with the salad oil in mayo. O.J. can be a suspension; easily separated by a filter, Or a colloid--depends if the pulp, if Any, is held in suspension or not. Usually, pulp will settle to the bottom, making that sample of Orange juice a suspension. At different temperatures, it acts differently. But, so does Fog. A colloid is something that normally shouldn't be as some of its molecules are too dense to normally "float" in suspension. Colloid means "glue".



4 0
3 years ago
Which of the following pairs of aqueous solutions will form a precipitate when mixed?
olya-2409 [2.1K]

Answer:

The correct answer is A) Pb(C₂H₃O₂)₂ + Li₂SO₄

Explanation:

  • All salts of Na, K and ammonium are soluble.
  • All nitrates are soluble.
  • All chlorides are soluble, with the exception of AgCl, Hg₂Cl₂, PbCl₂ and CuCl.
  • All sulfates are soluble, with the exception of CaSO₄, SrSO₄, BaSO₄, PbSO₄, HgSO₄, Hg₂SO₄ and Ag₂SO₄.
  • All hydroxides are poorly soluble, with the exception of alkaline hydroxides, Sr(OH)₂, Ba(OH)₂ and NH4(OH)
  • All carbonates are poorly soluble, with the exception of alkaline carbonates and ammonium carbonate.
  • All sulfides are poorly soluble, with the exception of alkaline sulfides, alkaline earth sulfides, and ammonium sulfide.

The reaction A is:

Pb(C₂H₃O₂)₂ + Li₂SO₄ ⇒PbSO₄ + 2 LiC₂H₃O₂

Lead sulfate is a slightly soluble solid, therefore it precipitates.

6 0
3 years ago
Which is not a disadvantage to wind energy?
Marat540 [252]

Answer:number c I think

Explanation:

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