Answer:
B and BBr3
Explanation:
1) 3HBr + B = BBr3 + H2 (double all equation because H2)
2) 6HBr + <em>2B </em>= <em>2BBr3</em> + 3H2
Answer: Nitrogen
Explanation: Nitrogen has an atomic number of 7 and an atomic mass of about 14 u
Answer:
Hey weirdo what's up?
So you got a question huh?
Lemme answer
As said the correct reading is 3.0grams
And the option A has 3.01 and 2.99 which are very mush precise and accurate to 3.0 gram don't you think?
So the answer is
Option ii the result of students A is both precise and accurate
Loye ya
Peace out
HA +BOH→BA+H2O
neutralisation reaction for monobasic acid monoacidic base
Answer:
<h2>0.87 atm </h2>
Explanation:
The new pressure can be found by using the formula for Boyle's law which is
![P_1V_1 = P_2V_2](https://tex.z-dn.net/?f=P_1V_1%20%3D%20P_2V_2)
Since we are finding the new pressure
![P_2 = \frac{P_1V_1}{V_2} \\](https://tex.z-dn.net/?f=P_2%20%3D%20%20%5Cfrac%7BP_1V_1%7D%7BV_2%7D%20%20%5C%5C)
From the question
2.47 L = 2470 mL
We have
![P_2 = \frac{765 \times 2.78}{2470} = \frac{2142}{2470} \\ = 0.867206...](https://tex.z-dn.net/?f=P_2%20%3D%20%20%5Cfrac%7B765%20%5Ctimes%202.78%7D%7B2470%7D%20%20%3D%20%20%5Cfrac%7B2142%7D%7B2470%7D%20%20%5C%5C%20%20%3D%200.867206...)
We have the final answer as
<h3>0.87 atm</h3>
Hope this helps you