Answer:
Helium (He)
Explanation:
An atom with two protons is always a helium atom. Hydrogen atom regards to atoms with 1 proton. If scientists count four protons in an atom, they know it's a beryllium atom. An atom with three protons is a lithium atom, an atom with five protons is a boron atom, an atom with six protons is a carbon atom, etc.
<u>Answer:</u>
<em>To raise the pH of the solution to 3.10 we have to add 2.34 L of water.</em>
<u>Explanation:</u>
<em>Given that the pH of the solution of HCl in water is 2.5.</em> Here the solution’s pH is changing from 2.5 to 3.10 which means the acidic nature of the solution is decreasing here on dilution. ions contribute to a solution’s acidic nature and contribute to a solution’s basic nature.
The equation connecting the concentration of and pH of a solution is pH=
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<em>When the pH is </em>
<em>On dilution the concentration of a solution decreases and volume increases.</em>
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<em>Volume of water to be added </em>
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Answer:
3AgNO₃ (aq) + Na₃PO₄(aq) → Ag₃PO₄(s) ↓ + 3NaNO₃(aq)
Explanation:
The reaction is:
3AgNO₃ (aq) + Na₃PO₄(aq) → Ag₃PO₄(s) ↓ + 3NaNO₃(aq)
3 moles of silver nitrate and 1 mol of sodium phosphate, react in order to produce 1 mol of solid silver phosphate 3 moles of sodium nitrate
3Ag⁺(aq) + PO₄³⁻ (aq) → Ag₃PO₄(s) ↓
Answer:
The greater the frequency means the more energy transferred.
The greater the wavelength means the less energy transferred
Answer:
rebar
is gridwork of steel rods
Explanation:
Reinforced concrete is one important component of skyscrapers. It consists of concrete (a mixture of water, cement powder, and aggregate consisting of gravel or sand) poured around a gridwork of steel rods (called rebar) that will strengthen the dried concrete against bending motion caused by the wind.