Answer: the answer is D im pretty sure
Explanation:
To determine whether the amount of H2 in the lab is dangerous, we first need to know how much hydrogen gas is present in the room in units of percent by volume. For this particular problem, we cannot exactly determine since we do not know the total volume of the room. Hope this answers the question.
Answer : The heat your body transfer must be, 25.1 kJ
Explanation :
Formula used :

or,

where,
Q = heat = ?
m = mass of water = 500.0 g
c = specific heat of water = 
= initial temperature = 
= final temperature = 
Now put all the given value in the above formula, we get:


Therefore, the heat your body transfer must be, 25.1 kJ
Sodium chloride is an ionic compound. ionic compound is when the compound itself is made up of a metal and non-metal element.
thus the answer is potassium bromide and cesium chloride.
The reaction of an Arrhenius acid with an Arrhenius base produces water and <span>A) a salt</span>