Just choice D.
If you find the number of atoms of each element, you will find that only choice D has the same amounts on each side of the equation.
Answer:
This is and ADDITION REACTION
Explanation:
Because your putting a compound and an element together
Answer:Elements of even atomic number and mass number are more stable than elements of odd atomic and mass numbers
Explanation: The fact that elements possessing even number of nucleons are more stable and abundant suggests that nucleons are paired in the nucleus. This even number of nucleons is commonly called a magic number because bit is associated with extra stability, abundance of elements and plenitude of isotopes of such elements.
These magic numbers are often numbers which are multiples of four.
<u>Answer: </u>The mass of water produced is 44.28 g
<u>Explanation:</u>
We are given:
Volume of oxygen gas = 27.50 L
At STP conditions:
22.4 L of volume is occupied by 1 mole of a substance
27.50 L of oxygen gas will be occupied by = ![\frac{1mol}{22.4L}\times 27.50L=1.23mol](https://tex.z-dn.net/?f=%5Cfrac%7B1mol%7D%7B22.4L%7D%5Ctimes%2027.50L%3D1.23mol)
The chemical equation for the formation of water follows:
![2H_2+O_2\rightarrow 2H_2O](https://tex.z-dn.net/?f=2H_2%2BO_2%5Crightarrow%202H_2O)
By the stoichiometry of the reaction:
If 1 mole of oxygen gas produces 2 moles of water
So, 1.23 moles of oxygen gas will produce =
of water
The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:
......(1)
Molar mass of water = 18 g/mol
Plugging values in equation 1:
![\text{Mass of water}=(2.46mol\times 18g/mol)=44.28g](https://tex.z-dn.net/?f=%5Ctext%7BMass%20of%20water%7D%3D%282.46mol%5Ctimes%2018g%2Fmol%29%3D44.28g)
Hence, the mass of water produced is 44.28 g
Hi,
The negative exponent changes number to decimal and signifies number of zeros in it.
For example:
![4 \times {10}^{ - 3} = 0.004](https://tex.z-dn.net/?f=4%20%5Ctimes%20%20%7B10%7D%5E%7B%20-%203%7D%20%20%3D%200.004)
Hope this helps.
r3t40