Answer:
Two moles of HC2H3O2 react with one mole of Ca(OH)2 to produce one mole of calcium acetate and two moles of water.
Explanation:
HC2H3O2 is Acetic acid that can also be represented as (CH3COOH).
when Ca(OH)2 reacts with Acetic acid the product formed will be Calcium acetate and water
Chemically the reaction can be represented as
2CH
3
COOH + Ca(OH)
2 → Ca(CH
3
COO)
2 + 2H
2
O
Two moles of CH3COOH react with one mole of Ca(OH)2 to produce one mole of Ca(CH3COO)2 and two moles of H2O.
Answer:The number of atoms in 2.0 mole Al is A. 2.0 Al atoms. B. 3.0 x 1023 Al atoms.
Secondly, is aluminum an atom or molecule? Aluminum is the second element in the thirteenth column of the periodic table. It is classified as a post-transition metal and a "poor metal". Aluminum atoms contain 13 electrons and 13 protons. There are 3 valence electrons in the outer shell.
Answer:
<h3>The answer is 8.29 %</h3>
Explanation:
The percentage error of a certain measurement can be found by using the formula
![P(\%) = \frac{error}{actual \: \: number} \times 100\% \\](https://tex.z-dn.net/?f=P%28%5C%25%29%20%3D%20%20%5Cfrac%7Berror%7D%7Bactual%20%5C%3A%20%20%5C%3A%20number%7D%20%20%5Ctimes%20100%5C%25%20%5C%5C%20)
From the question
actual density = 19.30g/L
error = 20.9 - 19.3 = 1.6
We have
![p(\%) = \frac{1.6}{19.3} \times 100 \\ = 8.290155440...](https://tex.z-dn.net/?f=p%28%5C%25%29%20%3D%20%20%5Cfrac%7B1.6%7D%7B19.3%7D%20%20%5Ctimes%20100%20%5C%5C%20%20%3D%208.290155440...)
We have the final answer as
<h3>8.29 %</h3>
Hope this helps you
Hello!
When the final velocity is less than the initial velocity, this is deceleration
<h2>
Why?</h2>
Acceleration is defined as the physical magnitude that measures the change in velocity with time. The units to express acceleration are speed over time.
The equation for acceleration is: ![a=\frac{v-v_o}{t-t_o}](https://tex.z-dn.net/?f=a%3D%5Cfrac%7Bv-v_o%7D%7Bt-t_o%7D)
Where: a=acceleration, v=final velocity, vo=initial velocity, t=final time, to=initial time.
If the final velocity is less than the initial velocity, then the acceleration is negative, and that is called deceleration. An example of this is when a car brakes.
Have a nice day!
Answer: The temperature rise is ![0.53^0C](https://tex.z-dn.net/?f=0.53%5E0C)
Explanation:
The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.
![Q=m\times c\times \Delta T](https://tex.z-dn.net/?f=Q%3Dm%5Ctimes%20c%5Ctimes%20%5CDelta%20T)
Q = Heat absorbed by ice = 5280 J
m = mass of ice = 2.40 kg = 2400 g (1kg=1000g)
c = heat capacity of water = ![4.18J/g^0C](https://tex.z-dn.net/?f=4.18J%2Fg%5E0C)
Initial temperature =
Final temperature =
Change in temperature ,![\Delta T=T_f-T_i=?](https://tex.z-dn.net/?f=%5CDelta%20T%3DT_f-T_i%3D%3F)
Putting in the values, we get:
![5280J=2400g\times 4.18J/g^0C\times \Delta T](https://tex.z-dn.net/?f=5280J%3D2400g%5Ctimes%204.18J%2Fg%5E0C%5Ctimes%20%5CDelta%20T)
![\Delta T=0.53^0C](https://tex.z-dn.net/?f=%5CDelta%20T%3D0.53%5E0C)
Thus the temperature rise is ![0.53^0C](https://tex.z-dn.net/?f=0.53%5E0C)