Answer:
There will be produced 3.5 moles of oxygen (O2)
Explanation:
Step 1: Data given
Number of moles Mercury (II) oxide (HgO) = 7 moles
Step 2: The balanced equation
2HgO → O2 + 2Hg
Step 3: Calculate number of moles of O2
For 2 moles of Mercury (II) oxide (HgO) we produce 1 mol of O2 and 2 moles of Hg
For 7 moles of Mercury (II) oxide (HgO) we'll have 7/2 = 3.5 moles of O2
There will be produced 3.5 moles of oxygen (O2)
Give the guy brainliest i dont know so give it to him
Answer:
photosyntheisis
Explanation:
The process by which plants and some other organisms capture enrgy in sunlight and use it to make food (Btw ik this is right becuase i did the same thing and i have the definition of what it is and other definitions!
Answer:
The correct answer is a. chemical bond. See the explanation below, please.
Explanation:
The resulting electrostatic interaction is called ionic bond between ions of opposite charge (one negative and one positive). This allows the attraction between both charges, constituting a chemical compound. Eg the Sodium (Na +) ion combines with the Chlorine (Cl-) ion forming Nacl (sodium chloride, known as table salt).
Answer: density =3.377g/cm³
Explanation:
Density =( molecular weight × effective number of atoms per unit cell) / (volume of unit cell × avogadro constant)
D= (M ×n) /(V×A)
M= 137g/mol
n= 2 (For BCC)
V=a³ , where a= 4r/√3
a= (4×222)/√3
a=512.69pm
a= 512.69×10^-10cm
V= ( 512.69×10^-10)^3
V= 1.3476×10^-22cm³
D= (137×2)/(1.3476×10^-22 × 6.02^23)
D= 3.377g/cm³
Therefore the density of barium is 3.377g/cm³
