Explanation:
the molar mass of a compound can be caucaleted by adding the standar atomic masses.
The answer is A, to my brain power ig B)
Answer:
About 547 grams.
Explanation:
We want to determine the mass of copper (II) bicarbonate produced when a reaction produces 2.95 moles of copper (II) bicarbonate.
To do so, we can use the initial value and convert it to grams using the molar mass.
Find the molar mass of copper (II) bicarbonate by summing the molar mass of each individual atom:
![\displaystyle \begin{aligned} \text{MM}_\text{Cu(HCO$_3$)$_2$} &= (63.55 + 2(1.01)+2(12.01)+6(16.00))\text{ g/mol} \\ \\ &=185.59\text{ g/mol} \end{aligned}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cbegin%7Baligned%7D%20%5Ctext%7BMM%7D_%5Ctext%7BCu%28HCO%24_3%24%29%24_2%24%7D%20%26%3D%20%2863.55%20%2B%202%281.01%29%2B2%2812.01%29%2B6%2816.00%29%29%5Ctext%7B%20g%2Fmol%7D%20%5C%5C%20%5C%5C%20%20%26%3D185.59%5Ctext%7B%20g%2Fmol%7D%20%5Cend%7Baligned%7D)
Dimensional Analysis:
![\displaystyle 2.95\text{ mol Cu(HCO$_3$)$_2$}\cdot \frac{185.59 \text{ g Cu(HCO$_3$)$_2$}}{1 \text{ mol Cu(HCO$_3$)$_2$}} \Rightarrow 547 \text{ g Cu(HCO$_3$)$_2$ }](https://tex.z-dn.net/?f=%5Cdisplaystyle%202.95%5Ctext%7B%20mol%20Cu%28HCO%24_3%24%29%24_2%24%7D%5Ccdot%20%5Cfrac%7B185.59%20%5Ctext%7B%20g%20Cu%28HCO%24_3%24%29%24_2%24%7D%7D%7B1%20%5Ctext%7B%20mol%20Cu%28HCO%24_3%24%29%24_2%24%7D%7D%20%5CRightarrow%20547%20%5Ctext%7B%20g%20Cu%28HCO%24_3%24%29%24_2%24%20%7D)
In conclusion, about 547 grams of copper (II) bicarbonate is produced.
Answer:
The thumb alone is controlled by nine separate muscles; The hand has been used as a symbol of protection since ancient times; The human hand is different to the hands or paws of other animals, because it has fingers and a thumb that can work together. Each finger has 3 bones and the thumb has two bones
Explanation:
Answer:
1. Rutherford did the scattering experiment and observed that some of the rays bounce back. He concluded that there is a mass in which positive charge is concentrated. This marks the discovery of nucleus.
2. J.J Thomson discovered electrons by conducting cathode ray experiment.
3. Dalton postulated that matter is made up of small particles caled atoms