HELPPPPP WILL MARK DOWN BRAINLIEST TOPIC: gravity

Chemistry

1 answer:

pshichka [43]3 years ago

4 0

Explanation:

1. Newton's universal law of gravitation states that every particle in the universe attracts every other particle with a force along a line joining them. The force is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

2.Bottom because the direction of the gravitational force is always downward toward the center of the Earth ... where the winds are stronger; the mixing tends to reduce the air flow at the higher altitude. (I think its bottom).

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Que es un atomo Por favor gracias

klemol [59]

Answer:

Un atomo es el parto pequeño de un elemento y es el bloque de construcción de la materia. Puede ser conocido como neutrón, protón o electrón.

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3 years ago

From the list of the instructions and tips below, select the statement that would NOT lead to a successful recrystallization O D

Pachacha [2.7K]

Answer:

C. Precipitate the crystals as fast as possible

Explanation:

C. Precipitate the crystals as fast as possible

Precipitation if done fast , can lead to the formation of impure crystals , as impurities also get stuck inside the crystals. So it must be done slowly to obtain the pure crystals . Slower the crystals form , purer they are .

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4 years ago

Question 3 of 10

beks73 [17]

Answer:c

Explanation:

7 0

3 years ago

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How many chlorine molecules are in 7.02 l of chlorine gas at stp?

emmasim [6.3K]

The answer is: [B]: 1.89 * 10²³ .
____________________________________________________

PV = nRT ; is the equation for "STP" conditions; that is, the "ideal gas equation" .
_______________________________________________
i.e. when Pressure, "P" = 1.00 atm;
Temperature, "T" = 273 K;
_____________________________________
R = the ideal gas constant = ((0.08206 L-atm/K-mol)
n = number of moles;
___________________________________
So, we plug in our known values:
______________________________________________
(1.00atm) (7.02L) = ("n" mol) (0.08206 L-atm/K-mol) (273K); 
_____________________________________________
→ 7.02 L·atm = (? mol) (22.4 L·atm/mol) .

(Note that the Molar Volume of a gas at STP is a constant using Avogadro's value of 22.4 L / mol. 1 mol of any ideal gas at STP occupies 22.4 L. An ideal gas takes the shape of its container)..
_______________________________________________________
 → Divide EACH side of the equation by "(22.4 L·atm/mol)" ;
________________________________________________
→ 7.02 L·atm / = ("n" mol) (22.4 L·atm/mol) ;
_________________________________________________
→ 7.02 L·atm / (22.4 L·atm/mol) =
[("n" mol) (22.4 L·atm/mol)]/(22.4 L·atm/mol);
______________________________________________________
to get:
_________________________________________________
→ n = 0.313 mol ;
_____________________________________________________
Note: 1 mole = 1 mol = 6.022 * 10²³ molecules.
____________________________________________
→ So, 0.313 mol Cl₂ (g) molecules * [(6.022 * 10²³ molecules) / (1 mol)] =
___________________________________________________________
→ [(0.313) * (6.022 *10²³) ] molecules of Cl₂ (g) ;
___________________________________________________________
→ = 1.88 * 10²³ molecules of Cl₂ g ;
___________________________________________________________
→ which most closely corresponds with answer choice:
___________________________________________________________
[B]: 1.89 * 10²³ .
___________________________________________________________

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4 years ago

Is H20 an atom or a molecule and is it a pure element or a

vfiekz [6]

Atom pure element because of fort nite

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3 years ago

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