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Ivan
3 years ago
9

How many significant figures in 890

Chemistry
1 answer:
Kamila [148]3 years ago
8 0

Answer:

890 has 2 significant figures

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Identify the type of chemical bond in a molecule reactant
e-lub [12.9K]
Draw the electron-dot (Lewis) structure of O2. You will see that there is a double bond, thus making the chemical bond a covalent bond since they have to share a pair of electrons in order to complete their octet.
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How many grams of carbon are required to produce 0.460 moles of SiC?
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As electrical energy is converted into heat energy, the total amount in the system
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<span>c. remains the same
</span>----------------------------------------------------
As electrical energy is converted into heat energy, the total amount in the system remains the same
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according to law of conservation of energy
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4 years ago
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List the number of protons neutrons and electrons in 13/6 C
Charra [1.4K]
<h3>Answer:</h3>

             Number of Protons =  6

             Number of Electrons  =  6

             Number of Neutrons  =  7

<h3>Explanation:</h3>

Number of Protons:

                               As the number of protons present in the nucleus are equal to the atomic number therefore, using periodic table one can easily find out the atomic number of C atom. Hence, C is present in group 14 and period 2 and having an atomic number of 6. Therefore, number of protons in C atom are 6.

Number of Electrons:

                                 As shown in statement, C is not carrying any type of charge. It means this atom is neutral in nature. Which means, it is carrying the same number of electrons as the number of protons in order to give a neutral atom. Therefore, it contains 6 electrons.

Number of Neutrons:

                                  Number of neutrons can be calculated using following formula,

                  No. of Neutrons  =  Atomic Mass - Number of Protons

As,

                                    Atomic Mass  =  13

So,

                                    No. of Neutrons  =  13 - 6

                                    No. of Neutrons  =  7

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3 years ago
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What is the octet rule? What is it based on?
Nimfa-mama [501]

Answer: The octet rule is a chemical rule of thumb that reflects the observation that main group elements tend to bond in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas.

Explanation:

8 0
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