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2 years ago

The formula for sulfuric acid is h2so4. how many elements does it contain

Physics

2 answers:

kifflom [539]2 years ago

8 0

Answer:

Sulfuric Acid, H2SO4 is a chemical compound made up of two hydrogen atom, one sulfer atom, and four oxygen atoms.

Explanation:

prisoha [69]2 years ago

3 0

It contains 2 hydrogens (H2), 1 Sulphur (S) AND 4 Oxygens (O4)

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Which element contains a full 2p orbital in its valence shell

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So Neon ( Ne) is the correct answer.

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3 years ago

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Why do you think the standards changed over time?

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https://www.quora.com/Why-do-you-think-standards-of-beauty-have-changed-over-the-years

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3 years ago

Which type of nuclear reaction involves combining light elements into a heavier element, with a resultant release of great amoun

torisob [31]

Answer: Fusion

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Combustion is a chemical reaction in which hydrocarbons are burnt in the presence of oxygen to give carbon dioxide and water.

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Nuclear fission is a process which involves the conversion of a heavier nuclei into two or more small and stable nuclei along with the release of energy.

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3 years ago

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A ball is thrown straight up with enough speed so that it is in the air for several seconds. Assume the positive direction is up

Andrew [12]

Answer:

a) v= 0 m/s b) v= 6.86 m/s

Explanation:

a) When the ball reaches to its highest point, under the influence of gravity, before starting to fall down, it momentarily comes to an stop (this is needed prior to change direction in any movement), so, applying the definition of acceleration, and replacing the acceleration a by g, we have:

vf = v₀ - g*t (1)

The minus sign means that the acceleration due to gravity is always downward, so if we assume that the positive direction is upwards it must be negative.

At the highest point, vf= 0.

b) Prior to solve this point, we need to know which is the time when the ball reaches to its highest point.

As we know vf=0, we can solve (1) for t, as follows:

th = v₀/g

Now, for a time that is 0.7 s before this time, applying the acceleration definition and solving for v again, we have:

v = v₀ -(g *(th-0.7 s)), but th= v₀/g, so we get:

v= v₀ -g((v₀/g)-0.7 s) = v₀ - v₀ + g*0.7 s

⇒ v=g*0.7 s = 9.8 m/s²*0.7 s

⇒ v = 6.86 m/s

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3 years ago

A migrating robin flies due north with a speed of 12 m/s relative to the air. The air moves due east with a speed of 6.7 m/s rel