Which of the following would naturally form a cation?<br> Ne<br><br> Li<br><br> O<br><br> I

Predict the reactants of this chemical reaction. That is, fill in the left side of the chemical equation.

Troyanec [42]

Answer: $Ca(OH)_2+2HCl\rightarrow CaCl_2+2H_2O$

Explanation:

Neutralization is a chemical reaction where an acid reacts with a base to form salt and water.

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side.

The balanced chemical equation will be:

$Ca(OH)_2+2HCl\rightarrow CaCl_2+2H_2O$

Thus the reactants are calcium hydroxide $(Ca(OH)_2$ and hydrochloric acid $(HCl)$

4 0

2 years ago

Which best explains why a bacterial cell is classified as a prokaryote?

8090 [49]

b the absence of a nucleus

6 0

3 years ago

1. The maximum recommended amount of citric acid (H3C6H5O7; the 3 hydrogens listed first are the acidic hydrogens – the only hyd

Lisa [10]

The density has been given as the mass of the substance per volume of the solution. The mass of citric acid in the bottle has been 1.22 grams.

<h3>What is percent mass?</h3>

Percent mass can be given as the mass of substance in the total mass of the solution.

The volume of the face serum has been 250 mL, and the density is 0.979 g/mL.

The mass of face serum in the bottle has been:

$\rm Density=\dfrac{Mass}{Volume}\\ 0.979\;g/mL=\dfrac{Mass}{250\;mL}\\ Mass=244.75\;g$

The total mass of face serum has been 244.75 grams.

The percent mass of citric acid in face serum is 0.5%. This states the presence of 0.5-gram citric acids in 100 grams sample.

The mass of citric acid in the face serum sample is given as:

$\rm 100\;gram\;sample=0.5\;g\;H_3C_6H_5O_7\\\\244.75\;grams\;sample=\dfrac{0.5}{100}\;\times\;244.75\;grams\; H_3C_6H_5O_7\\\\244.75\;grams\;sample=1.22\;grams\;H_3C_6H_5O_7$