Somewhere around 2500. hope this helps!
Answer:
A
Explanation:
Simply put, one of these is not like the others. The only one involved with changing instead of reshaping is the egg.
Answer:
mass of substance =50.4 g
Explanation:
Using the density formula;
Density = mass of substance / volume of substance
Therefore, making mass subject of the density formula,
mass of substance = volume of substance / density of substance
volume of substance = 60.5 mL, density = 1.20 g/mL ( since common units of density is either g/cm³ or g/mL)
mass of the substance = 60.5 mL / 1.20 g/mL
mass of substance = 50.4 g
Answer:Number of electrons that are present in an atom is determined by the electronic configuration of that atom.
If an ion is carrying a positive charge, it means that the atom has lost electrons and if an ion is carrying a negative charge, it means that the atom has gained electrons.
For the given options:
Option A: The atomic number of hydrogen atom is 1 and the electronic configuration for ion will be:
Thus, this atom does not have any electrons.
Option B: The atomic number of bromine atom is 35 and the electronic configuration for ion will be:
Thus, this atom has 36 electrons.
Option C: The atomic number of aluminium atom is 13 and the electronic configuration for ion will be:
Explanation:
Answer:
Mass = 70.4 g
Explanation:
Given data:
Mass of CO₂ produced = ?
Mass of C₄H₁₀ = 23 g
Solution:
Chemical equation:
2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O
Number of moles of C₄H₁₀:
Number of moles = mass/ molar mass
Number of moles = 23 g/ 58.12 g/mol
Number of moles = 0.4 mol
Now we will compare the moles of C₄H₁₀ and CO₂ from balance chemical equation.
C₄H₁₀ : CO₂
2 : 8
0.4 : 8/2×0.4 = 1.6 mol
Mass of CO₂:
Mass = number of moles × molar mass
Mass = 1.6 mol × 44 g/mol
Mass = 70.4 g
