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Elis [28]
3 years ago
15

Define ionic compound

Chemistry
1 answer:
Hunter-Best [27]3 years ago
3 0

Answer:

Explanation:

An ionic compound is a substance formed from the chemical binding of elements with opposite charges. The force of attraction between opposite charges keeps the molecule together. Common table salt, or sodium chloride, is an example of an ionic compound.

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In a vacuum, with no air resistance, how do 2 objects of different weights compare when falling?
viva [34]

Answer

hope it helps

Explanation:

In real life, heavier objects sometimes fall faster than light objects, but not because of gravity. Gravity makes all objects increase their speed at the same rate, regardless of how big they are. But if you drop 2 things outside, the air molecules may slow down one thing more than another.

7 0
4 years ago
why polychromatic light gives continious spectrum if passes throught prism and why polychromatic light gives line spectrum when
alukav5142 [94]

Answer:

I don’t know

Explanation:

4 0
3 years ago
How many grams of ammonia (NH3) are produced when you react 4.76 grams of hydrogen (H2)
Andrews [41]

Answer: hre

Explanation:

N2(g) + 3H2-> 2NH3(g)  This is the balanced equation

Note the mole ratio between N2, H2 and NH3.  It is 1 : 3 : 2  This will be important.

 

moles N2 present = 28.0 g N2 x 1 mole N2/28 g = 1 mole N2 present

moles H2 present = 25.0 g H2 x 1 mole H2/2 g = 12.5 moles H2 present

Based on mole ratio, N2 is limiting in this situation because there is more than enough H2 but not enough N2.

 

moles NH3 that can be produced = 1 mole N2 x 2 moles NH3/mole N2 = 2 moles NH3 can be produced  

grams of NH3 that can be produced = 2 moles NH3 x 17 g/mole = 34 grams of NH3 can be produced

 

NOTE:  The key to this problem is recognizing that N2 is limiting, and therefore limits how much NH3 can be produced.

6 0
4 years ago
Read 2 more answers
List three criteria used to identify a cold front.
zaharov [31]

Answer:

Explanation:

A cold front is a transition zone from warm air masses to cold air masses. We use weather elements to identify cold fronts.

  1. Temperature: Since air moves from warm masses to cold masses, the air in a cold front is at different temperatures. The air behind a cold front is warm while the one ahead is cold. This implies that within a cold front is at different temperatures.
  2. Precipitation: Prior to the passing of cold front, precipitation is usually rife with low showers. A coldfront in itself is usually accompanied by heavy rainfall full of thunderstorms and lightening. After a coldfront, the showers steadies and decreases.
  3. Pressure changes: before a coldfront, the atmospheric pressure decreases steadily. When the front arrives, the pressure further lowers with a sharp increase thereafter. After the front, the pressure can continue to increase.
3 0
3 years ago
What is the result of multiplying 2.5 × 10^10 by 3.5 × 10-^2
LUCKY_DIMON [66]
2,5*10^{10}*3,5*10^{-2}=8,75*10^{10+(-2)}=8,75*10^{8}
7 0
4 years ago
Read 2 more answers
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