Which of the following will affect the rate of a chemical reaction?

Chemistry

2 answers:

Tatiana [17]3 years ago

5 0

Answer:

its density

Explanation:

max2010maxim [7]3 years ago

3 0

Answer:

solution concentration

Explanation:

Among the options given in the above question, solution concentration will affect the rate of a chemical reaction. This is because an increase in reagent concentration speeds up the reaction because there will be a greater number of reagent particles per unit volume, increasing the likelihood of effective collisions between them.

In addition to concentration, the factors that can influence the rate of a chemical reaction are temperature, catalyst, pressure and contact surface.

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How do her cells use these molecules to release energy for her body to run?

Anika [276]

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2 years ago

Name the four elements on the Periodic Table that are considered METALLOIDS?

Nimfa-mama [501]

Answer:

boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te), polonium (Po) and astatine (At)

Explanation:

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you can search "metalloids on the periodic table" and go to images to see what i mean :)

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3 years ago

g Where, approximately, is the negative pole on each of these molecules? Lewis structure for C O F 2. A central C atom is single

seropon [69]

The molecule with higher dipole moment is COFH because the geometry of the molecule in the COF2 nearly cancel the dipolar moment of each other. To be more clear:

The dipolar moment is the vectorial sum of all bond moments in the molecule or dipolar moment of each bond. The dipolar moment of a molecule with three or more atoms is determined by bond polarity as their geometry.

COF2 has a trigonal planar structure which are symmetric. The electronegativity of oxygen is slightly different regarding fluor. So as you can see in the image, the electronic density is specially displaced to the fluor atoms, but either to the oxygen atom.

COFH has a trigonal structure but differs from COF2 because there is an hydrogen who is donating it's electronic density, so in this zone the electronic density is less than over oxygen or fluor. That makes bond angles be different between them.