Answer:
4.41 × 10¹⁷ Seconds
Explanation:
For this problem we will first find out the number of days in 14 billion years.
Remember that 1 billion is equal to 1,000,000,000 or 10⁹. So, 14 billion years will be written as 14,000,000,000 or 1.4 × 10¹⁰ years.
Therefore, In
1 year there are = 365 years
So, In
1.4 × 10¹⁰ years there will be = X years,
Solving for X,
X = 1.4 × 10¹⁰ years × 365 days / 1 year
X = 5.11 × 10¹² days
Secondly, as there are 24 hours per day and each hour has 60 minutes and each minute has 60 seconds, therefore, the number of seconds per day are calculated as,
Number of Sec/day = 24 × 60 × 60
Number of Sec/day = 86400 sec/day
Hence, If,
1 day has = 86400 seconds
then,
5.11 × 10¹² days will contain = X seconds
Solving for X,
X = 5.11 × 10¹² days × 86400 sec / 1 day
X = 4.41 × 10¹⁷ Seconds
there is no image so there's no way for me to know an answer
Answer:5 to the 7th power
Explanation:
Divided 7 and y then add 4
Answer:
See detailed answer with explanation below.
Explanation:
Valence electrons are electrons found on the outermost shell of an atom. They are the electrons in an atom that participate in chemical combination. Recall that the outermost shell of an atom is also referred to as its valence shell. Let us consider an example; if we look at the atom, sodium-11, its electronic configuration is 2,8,1. The last one electron is the valence electron of sodium which is found in its outermost or valence shell.
Positive ions are formed when electrons are lost from the valence shell of an atom. For instance, if the outermost electron in sodium is lost, we now form the sodium ion Na^+ which is a positive ion. Positive ions possess less number of electrons compared to their corresponding atoms.
Negative ions are formed when one or more electrons is added to the valence shell of an atom. A negative ion possesses more electrons than its corresponding atom. For example, chlorine(Cl) contains 17 electrons but the chloride ion (Cl^-) contains 18 electrons.
In molecular compounds, a bond is formed when two electrons are shared between the bonding atoms. Each bonding atom may contribute one of the shared electrons (ordinary covalent bond) or one of the bonding atoms may provide the both shared electrons (coordinate covalent bond). The shared pair may be located at an equidistant position to the nucleus of both atoms. Similarly, the electron may be drawn closer to the nucleus of one atom than the other (polar covalent bond) depending on the electro negativity of the two bonding atoms.
The electrons are shared in order to complete the octet of each atom by so doing, the both bonding atoms now obey the octet rule. For example, two chlorine atoms may come together to form a covalent bond in which each chlorine atom has an octet of electrons on its outermost shell.
