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Gnoma [55]
3 years ago
9

When a person looks at a bright light, tiny muscles in the eye contract so less light can enter the eye.

Chemistry
2 answers:
Wewaii [24]3 years ago
7 0

Answer:

nonstriated

involuntary

attached to the eyeball

Explanation:

galben [10]3 years ago
4 0

Answer:

nonstriated, involuntary and attached to eyeball.

Explanation:

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What is the ph of a 0.15 m solution of ammonium chloride?
Thepotemich [5.8K]
 Best Answer:  <span>(a) 
8.9 x 10^-7 = x^2 / 0.15-x 
x = [OH-] = 0.00037 M 
pOH = 3.4 
pH = 14 - 3.4 = 10.6 

(b) 
Ka = Kw/Kb = 5.6 x 10^-10 = x^2 / 0.20-x 
x = [H+] = 0.000011 M 
pH = 5.0</span>
7 0
3 years ago
Equal amounts of four gases are placed in identical containers at the temperatures that are noted below. Samples of Gases at Dif
Alborosie
Answer : S)  33.2 °C

Explanation : When the equal amounts of gases are placed in identical containers but subjected to different temperatures would exert pressure in different amount which will in turn increase the rate of collision between the molecules of gas.

So, when the temperature is increased to maximum greater amount of force would be exerted and the gas molecules will collide with a larger force. Hence the answer will be as the highest temperature i.e. 33.2 °C
4 0
3 years ago
The chemical formula for the ionic compound aluminum sulfite is Al2(SO3)3. Explain why there are 2 cations for every 3 anions in
svp [43]

Answer:

Explanation:

While trying to write the chemical formula for a compound (a neutral molecule), one must identify and exchange the charge of the cation with that of the anion to become the subscript of one other. For example

Aluminium oxide has Aluminium (Al) and oxygen (O); since Al has a charge of 3+ (the cation) and O has a charge of 2- (the anion), the compound would have it's charges as Al³⁺O²⁻ and when the charges are exchanged to there subscripts, it would form Al₂O₃; thus there would be two cations of aluminium for every three anions of oxygen in order to have a neutral molecule.

This same explanation can be given to Aluminium sulfite. Aluminium sulfite has Aluminium (Al) and sulfite (SO₃). Al has a charge of 3+ (cation) while sulfite has a charge of 2- (anion), with the compound having it's charges as Al³⁺(SO₃)²⁻ and when the charges are exchanged to there subscripts, it would form Al₂(SO₃)₃ and would thus have 2 cations of aluminium (Al³⁺) for every 3 anions of sulfite (SO₃³⁻) in order to have a neutral molecule.

8 0
2 years ago
The acceleration due to gravity on Earth’s moon is about 1.6m/s2. An astronaut with full survival pack has a mass of 100kg. He l
myrzilka [38]

Answer:

Astronaut

Explanation:

Astronaut.He is 100kgs

8 0
3 years ago
Pls help me i have been seeing people giving out the wrong answers on purpose and I just don't want that so pls
fiasKO [112]

Answer:

B

Explanation:

6 0
2 years ago
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