Pressure Plates there is different types of plates also
Answer:
40.72g of sulfuric acid are needed
Explanation:
When sulfuric acid, H₂SO₄, is neutralized by lead (IV) hydroxide, Pb(OH)₄, Lead (IV) sulfate, Pb(SO₄)₂ and water as follows:
2 H₂SO₄ + Pb(OH)₄ → Pb(SO₄)₂ + 4H₂O
To solve this question we must find the moles of 57.18g of Pb(SO₄)₂. As 2 moles of H₂SO₄ produce 1mol Pb(SO₄)₂ we can find the moles of H₂SO₄ and its mass as follows:
<em>Moles Pb(SO₄)₂ -Molar mass: 275.23 g/mol-</em>
57.18g * (1mol / 275.23g) = 0.2078 moles Pb(SO₄)₂
<em>Moles H₂SO₄:</em>
0.2078 moles Pb(SO₄)₂ * (2mol H₂SO₄ / 1mol Pb(SO₄)₂) = 0.4155 moles H₂SO₄
<em>Mass H₂SO₄ -Molar mass: 98g/mol-</em>
0.4155 moles H₂SO₄ * (98g / mol) =
<h3>40.72g of sulfuric acid are needed</h3>
The right answer is noble gases.
The noble gases, or rare gases, are the chemical elements of group 18 (formerly "group VIIIA" or even "group 0") of the periodic table. These are helium He, neon 10Ne, argon 18Ar, krypton 36Kr, xenon 54Xe and radon 86Rn, the latter being radioactive.
This property means that they can not bind with other atoms to form molecules or lose electrons to transform into ions, hence their name noble or inert gases (they are not very active and do not do not mix). In nature, all elements "want" to become stable.
Answer:
5
Explanation:
all you do is the math expression
Answer:
one its exothermic two i would say its five or forty
Explanation: