Answer:
Alkali metal hydroxides can be used to test the identity of metals in certain salts. The colour of the precipitate will help identify the metal : Calcium hydroxide is soluble; no precipitate is formed.
<em>réponse</em>: <em>verdadero</em>
<em>Explication</em>:
Answer:
=> 0.10 moles
Explanation:
The question is asking us to find the moles of NaCl cid formed.
We have been provided with;
0.10 L of 1.0 M NaOH.
We know that mole ratio of the reaction is 1:1 and also the molarity of a solution is contained in 1 L or 1000 mL or 1000 cm³.
This means that;
1.0 M is contained in 1.0 L.
X mol is contained in 0.10 L
= 0.10 moles of NaCl formed
Answer:
estan ingles como se hace para poner en español
Answer:
180.87 °C
Explanation:
Applying pressure law,
P/T = P'/T'..................... Equation 1
Where P = Initial pressure of helium gas, T = Initial Temperature of helium gas, P' = Final Pressure of helium gas, T' = Final Temperature of helium gas
Make T' the subject of equation 1
T' = P'T/P......................... Equation 2
From the question,
Given: P = 1.5 atm, P' = 2.3 atm, T = 23°C = (23+273)K = 296 K
Substitute these values into equation 2
T' = (2.3×296/1.5)
T' = 680.8/1.5
T' = 453.87 K
T' = 453.87-273
T' = 180.87°C
