<span>a) Table salt: it is a compound. A compound is a combination of atoms in fixed proportions.Table salt is NaCl, which means that table salt is a compound of 1 atom of Na and 1 atom of Cl and not other thing. b) Blood: is an homogeneous mixture: it is a mixture of many compounds which can not be easily distinguished or separated, you need microscopes or very special physical methods to distinguish or separate the different compounds of blood. d) Steel: it is a special king of homogeneous mixture (it is called an alloy) which, as in the case of blood, cannot be distinguished or separated easily. d) Planet earth: it is a heterogeneous mixture. You can easily distinguish many of the compounds of the planet Earth: water, oxygen, carbon,...</span><span />
a hearing aid.
it doesn't get in contact with fluids (like contact lenses) and doesn't get implanted, so it got not much to do with the immune system
The higher its frequency. Since short wavelengths have more energy, the frequency gets higher. Hope this helped!
-TTL
Answer:
Explanation:
First we need to to set and balance the equation:
With this we can balance the equation with our molar fractions, and we will asume 1 mole of mixture at the beginning for practical purposes:
With the equation we need to balance with the limit reactant, that is CO:
Now we just need to operate with the fractions that we have:
We proceed to calculate the mass of each product at the end with the moles of the balanced equation, remember that we had an excess of oxygen at the beginning, so we need to add that excess at the end:
Now that we have the masses of each product, and the total mass, we can calculate the fraction:
Answer:
2CaO + 2CO2 → 2CaCO2 + O2 is right