Want this question answered?
Be notified when an answer is posted
The 4 in 4H2 stand for "4" molecules in that equation, unless specified as being moles.
The answer depends on what you mean by "7 Th's".
If you mean 2/3 then 2/3 of 18 = 12 and 18/2 = 9
The mean is 38.
It is calculated the same way as if there were an odd number of numbers:mean = sum of all the numbers ÷ how many numbers there areThe median however is calculated slightly differently. After the numbers have been sorted into order, then:If there is an odd number of numbersThe median is the middle one which is the ((number_of_numbers + 1)÷2)th one. eg if there are 15 numbers this is the ((15+1)÷2)th = 8th number.If there is an even number of numbersThe median is given by the mean of the middle two numbers. eg if there are 20 numbers, then the median is the mean of the (20÷2)th = 10th and the (20÷2+1)th = 11th numbers, ie the median is (10th number + 11th number)÷2
The little 2 in 4H2 indicates that there are two hydrogen atoms bonded in a molecule of 4H2. This notation is used in chemistry to represent the number of atoms of each element in a compound or molecule.
To balance the equation 4H2 + 2C, we need to adjust the number of atoms on each side of the equation. Adding a coefficient of 2 in front of C on the left side will balance the carbon atoms. The balanced equation will be 4H2 + 2C2.
H2 is the molecule of two Hydrogen atoms. The 4 means that there are 4 of the molecules. ■
The meaning of 4 H2 is four molecules of hydrogen.
The 4 in 4H2 stand for "4" molecules in that equation, unless specified as being moles.
2 Th's only 2 are needed to make 1
O2 +4H2--> 2H2O
It is 6 Th.
If you mean 2/3 then 2/3 of 18 = 12 and 18/2 = 9
The answer depends on what you mean by "7 Th's".
If you mean 'I am 2 (years old)': 'Tengo dos an~os' - pronounced: TENGaw thoss ANNyoss ('th' as in 'the')
The answer depends on what you mean by "3 Th's".