John dalton
Brainiest plzzz :))
Answer:
Mass = 76986 g
Explanation:
Given data:
Dimensions of tank = 126 cm× 47 cm× 13 cm
Mass of water required to filled = ?
Solution:
First of all we will calculate the volume of tank which is equal to the volume of water required to fill it.
Volume = length ×height ×width
Volume = 126 cm × 13 cm× 47 cm
Volume = 76986 cm³
Mass of water:
Mass = density × volume
density of water is 1 g/cm³
Mass = 1 g/cm³× 76986 cm³
Mass = 76986 g
<h2>
Answer:
atoms</h2>
Explanation:
The given formula of the compound is 
The formula says
Every mole of contains 
moles of atoms of hydrogen.
Given that number of moles of compound is 
So,the number of moles of hydrogen atoms present is 
Since each mole has 
atoms,
moles has 
atoms.
This question comes with this list of answer choices:
<span>A. CO₂
B.N₂O
C.NaCl
</span><span>
D.C₆H₁₂O₆
</span>
Answer: option C.NaCl
Justification.
1) When two diferent elements join together chemically they can form either a covalent bond or a ionic bond.
2) When the bonds are covalents the compound is called covalent, when the bonds are ionics the compound is called ionic.
3) To predict whether the compound is ionic or covalent, you must see the electronegativities of the elements.
4) Ionic compounds require the formation of ions, a posititve ion and a negative ion. The positive ion is formed when the element loses one or more electrons. The negative ion is formed when the element gains one or more electrons.
Then, in the formation of a ionic compound it is implicit the exchange of electrons (one element gains the electrons that the other lose) and this is possible, when the difference in electronegativities are high enough.
5) So, you must look at the electronegativities to make your prediction. In the given options, the compounds of the options A, B and D are between non-metals. Then, you can predict that their electronegativities are not as much differet as to form ions. They will form covalent bonds.
6) Being sodium and chloride a metal and non-metal, you can expect that their electronegativities differ quite enough to form the ionic bond (this is not true for any pair of non-metal and metal elements, but being them the only pair of metal - non metal elements, this is the only option).
This leads to the conclusion that the NaCl formula shows an ionic compound, and is the answer.
Answer:
[H+] =5.62*10⁻¹⁰
Explanation:
pH = 9.25
The formula to find pH of a solution is
pH = -Log[H+]
9.25 = -Log[H+]
Take the anti log of both sides
[H+] = 10⁻⁹.²⁵
[H+] = 5.62*10⁻¹⁰
The concentration of Lithium Hydroxide is 5.62*10⁻¹⁰
