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nikdorinn [45]
2 years ago
12

What makes the bond angles change?

Chemistry
1 answer:
Solnce55 [7]2 years ago
7 0

Answer:

Bond points will go astray from their perfect values agreeing to the run the show that solitary sets repulse other electrons more unequivocally than holding sets. In spite of the fact that solitary sets are clearly littler than molecules, they got to be closer to the core of an molecule than a holding combine.

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How much heat is needed to raise the temperature of water with mass of 27.0 g at 20.0°C to 45.0°C?
ohaa [14]

Answer:

2835 J

Explanation:

Take the specific heat capacity of water as 4.2 J/ g°C.

Energy (heat) = mass x specific heat capacity x change in temperature

(E= mcΔT)

E = 27 x 4.2 x (45-20)

E = 2835 J

7 0
3 years ago
Why reducing power of elements decrease, on moving from left to right in a period?
masya89 [10]
The atom or an ion which loses electron /electrons is called reducing agent.

Whole moving across a period from left to right metallic character decreases, therefore reducing power element decreases.
3 0
2 years ago
What is passive transport
ikadub [295]
<span>Passive transport is a movement of biochemicals and other atomic or molecular substances across cell membranes without need of energy input.</span>
3 0
2 years ago
Read 2 more answers
How many valence electrons does a neutral atom of beryllium have
andrezito [222]

Answer:

A neutral Beryllium atom has two (2) valence electrons

Explanation:

<em>Beryllium, Be,</em> is a group 2 element on the periodic table. Its atomic number is 4.

Generally, atomic number equals number of electrons, which means a neutral Beryllium atom contains four (4) electrons: two (2)  in the inner shells and 2 in the outer shell (valence electrons), which can take part in a chemical reaction and participate in chemical bonding.

8 0
3 years ago
You have a sample that has a h3o+ concentration of 1.25 x 10-5 m. what would be the [oh-]?
deff fn [24]

Answer:

[OH⁻] = 8x10⁻¹⁰

Explanation:

Kw = 1x10⁻¹⁴

Kw = [H₃O⁺] . [OH⁻]

1x10⁻¹⁴ = 1.25x10⁻⁵ . [OH⁻]

1x10⁻¹⁴ / 1.25x10⁻⁵ = [OH⁻]

[OH⁻] = 8x10⁻¹⁰

7 0
3 years ago
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