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natulia [17]
3 years ago
9

If your heart beats an average of 68 times per minute, how many times will your heart beat in an hour? In a day? In a week? Show

all work
Chemistry
1 answer:
Georgia [21]3 years ago
3 0
Per hour-68x60=4080
Per day-4080x24=97920
Per week-97920x7=685440
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Hello! Id like if someone could tell me this answer, thank you so much!
DaniilM [7]

Answer:

Option D. ZnCl₂ and H₂

Explanation:

From the question given above, the following equation was obtained:

2HCl + Zn —> ZnCl₂ + H₂

Products =?

In a chemical equation, reactants are located on the left side while products are located on the right side i.e

Reactants —> Products

Now, considering the equation from the question i.e

2HCl + Zn —> ZnCl₂ + H₂

The products are ZnCl₂ and H₂ because from our discussion above, we said that products are only located on the right side of chemical equation.

Thus, option D gives the correct answer to the question.

4 0
2 years ago
Mass = 386g volume= 30cm3
dezoksy [38]
Can you be more specific, I think the answer is 7.1506
7 0
2 years ago
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4. Do you think there is a change in energy as the fireworks travel from the ground
Andru [333]
Yes when a firework goes into the sky it releases chemical potential energy which is then changed into kinetic energy
4 0
2 years ago
An ion is an atom with a net electrical charge due to ______.
Serga [27]
<span>the loss of one or more electrons & the addition of one of more electrons</span>
7 0
3 years ago
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The atomic number of an element:
Novosadov [1.4K]

Answer:The atomic number (represented by the letter Z) of an element is the number of protons in the nucleus of each atom of that element. An atom can be classified as a particular element based solely on its atomic number. For example, any atom with an atomic number of 8 (its nucleus contains 8 protons) is an oxygen atom, and any atom with a different number of protons would be a different element. The periodic table (see figure below) displays all of the known elements and is arranged in order of increasing atomic number. In this table, an element's atomic number is indicated above the elemental symbol. Hydrogen, at the upper left of the table, has an atomic number of 1. Every hydrogen atom has one proton in its nucleus. Next on the table is helium, whose atoms have two protons in the nucleus. Lithium atoms have three protons, beryllium atoms have four, and so on.

Explanation:

it could not be the right answer

3 0
2 years ago
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