Answer:
85 ml
Explanation:
move the decimal place over two times
Answer:
According to the Safety Data Sheet (SDS), the major harzard of concentrated HCl is that it may cause severe burns to skin, eyes and mucous membranes.
Explanation:
The SDS also informs that:
Most Important Hazards:
- May cause severe burns to skin, eyes and mucous membranes.
- Steam produced is irritating.
- Pollution of rivers and water bodies by changing the pH. Affects flora and fauna that comes in contact with acid.
Product Effects:
- If in direct contact with eyes will cause serious burns and vision loss.
Adverse effects to human health:
- Inhalation causes severe respiratory tract irritation. May cause pulmonary edema. The contact with the skin causes burns, which can lead to dermatitis. Prolonged contact of acid leads to visual damage to vision loss. If swallowed, may cause burns to the mucous membranes of the mouth and digestive system.
Environmental Effects:
- Affects rivers and streams by changing the pH of the water. May contaminate the soil. Vapors may temporarily affect air quality.
Physical and chemical hazards:
- Reacts with metals such as; iron, aluminum, zinc, magnesium, among others, forming hydrogen, which mixed with air may cause explosion and air displacement upon ignition under specific.
Answer : The enthalpy change of reaction is -23.9 kJ
Explanation :
According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.
According to this law, the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation. That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.
The given final reaction is,
The intermediate balanced chemical reaction will be,
(1) 
(2) 
First we will reverse the reaction 1 and multiply equation 2 by 3 then adding both the equation, we get :
(1) 
(2) 
The expression for final enthalpy is,
Therefore, the enthalpy change of reaction is -23.9 kJ
Take the given 2.00 moles of hydrogen then divide it by 1 mole of hydrogen. Second you want to multiply the answer by 22.4L. Giving you an answer of 44.8L of hydrogen
