The tongue depressor will float on water because its density is less than that of water.
<h3>When do substances sink or float in a liquid?</h3>
Substance will either float or sink in a liquid depending on the comparative densities of the substance and the liquid.
A substance will float in a liquid if it is less dense than the liquid.
A substance will sink in a liquid if it is denser than the liquid.
The density of the tongue depressor = 4.54/6.78 = 0.67 g/cm³
The density of water is 1 g/cm³.
Therefore, the tongue depressor will float on water.
In conclusion, the density of substances determines whether thy float or sink in water.
Learn more about density at: brainly.com/question/952755
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Answer:Covalent bonding occurs when pairs of electrons are shared by atoms. Atoms will covalently bond with other atoms in order to gain more stability, which is gained by forming a full electron shell. By sharing their outer most (valence) electrons, atoms can fill up their outer electron shell and gain stability.
Explanation::)
2HCl(aq) + ZnS(s) ⇒ ZnCl₂(aq) + H₂S(g)
<h3>Further explanation </h3>
Equalization of chemical reactions can be done using variables. Steps in equalizing the reaction equation:
- 1. gives a coefficient on substances involved in the equation of reaction such as a, b, or c, etc.
- 2. make an equation based on the similarity of the number of atoms where the number of atoms = coefficient × index (subscript) between reactant and product
- 3. Select the coefficient of the substance with the most complex chemical formula equal to 1
Reaction
HCl(aq) + ZnS(s) ⇒ ZnCl₂(aq) + H₂S(g)
1. give equation
aHCl(aq) + bZnS(s) ⇒ ZnCl₂(aq) + cH₂S(g)
2. make an equation
H, left=a, right=2c⇒a=2c(eq 1)
Cl, left=a, right=2⇒a=2⇒c=1(from eq 1)
Zn, left=b, right=1⇒b=1
So the equation :
2HCl(aq) + ZnS(s) ⇒ ZnCl₂(aq) + H₂S(g)
I guess you are asking what world should go at the beginning of the sentence. If I am right, it is energy.
Answer:
Explanation:
The moving part won't move on its own there's a force but the force isn't enough for something like a bike chain it need grease to move smoothly or else it will just be super stuck or slow.
