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pickupchik [31]
3 years ago
12

Which of the following is an alkali metal?

Chemistry
2 answers:
Veronika [31]3 years ago
7 0

Answer:

lithium is akali metal

Afina-wow [57]3 years ago
3 0

Answer:

lithium is an alkali metal as it lies in group 1st in modern perodic table.

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Que es la tabla periodica, que organiza y para que se utiliza
VladimirAG [237]

Answer:

La tabla periódica, también conocida como la tabla periódica de elementos, es una visualización tabular de los elementos químicos, que están organizados por número atómico, configuración electrónica y propiedades químicas recurrentes. La estructura de la tabla muestra tendencias periódicas.

Explanation:

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3 years ago
What is the correct answer?
avanturin [10]
Because light travels faster than sound
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3 years ago
How many moles of copper atoms are in 150g of copper metal
IRINA_888 [86]
The answer to this question would be: 2.36 mol

To answer this question, you need to know the molecular weight of copper. Molecular weight determines how much the weight of 1 mol of a molecule has. Copper molecular weight about 63.5g/mol. Then, the amount of mol in 150g copper should be: 150g / (63.5g/mol)= 2.36 mol
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3 years ago
How would life be different if there were 10 hours in a day
Anna71 [15]

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If there was only 10 hours in a day, including the night time it would be complexly new environment. Say you are up for 7 hours and sleep 3, in those 7 hours you would go to work for probably 4 hours, come home and do stuff for 3 then go to bed and do it all over again.

8 0
3 years ago
How many atoms of hydrogen are there in 3.0kg of ethane
kvasek [131]
Ethane has the formula C2H6.
From the periodic table:
molecular mass of carbon = 12 grams
molecular mass of hydrogen = 1 gram
Therefore:
molar mass of ethane = 2(12) + 6(1) = 30 grams

This means that each 30 grams of ethane contains 6 grams of hydrogen. To know how many grams of hydrogen are in 3000 grams of ethane (3 kg), we will simply use cross multiplication as follows:
mass of hydrogen = (3000 x 6) / 30 = 600 grams
7 0
3 years ago
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