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Crazy boy [7]
3 years ago
7

Which isotope has 8 neutrons and can be used for metabolic studies and to date archeological artifacts?

Chemistry
2 answers:
musickatia [10]3 years ago
8 0
The answer is <span>B. carbon-14</span>
kotykmax [81]3 years ago
6 0

Answer:

the answer is b

Explanation:

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Se tiene un litronde solucion de agua con alcohol con una consentracion del 4.5% v/v ¿Cuanto alcohol se tiene en la solución
Vinvika [58]

Answer:

45 mL

Explanation:

Tenemos los siguientes datos:

V = 1 L

C = 4,5% v/v

El porcentaje en volumen (%v/v) expresa el volumen de soluto (alcohol en este caso) que hay cada 100 mL de solución. Si la solución tiene una concentración del 4,5% v/v eso quiere decir que hay 4,5 ml de alcohol cada 100 ml de solución, de acuerdo a lo siguiente:

4,5% v/v alcohol = volumen alcohol/ volumen solución x 100 = 4,5 mL alcohol/100 mL solución= 4,5 mL alcohol/0,1 L alcohol

Por lo tanto, al multiplicar por el volumen total de la solución (1 L), obtenemos la cantidad total de alcohol:

4,5 mL alcohol/0,1 L alcohol x 1 L = 45 mL

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3 years ago
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Which of the following pairs of elements would most likely combine to form a salt?
Delvig [45]
B.sodium and aluminum
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3 years ago
Please assist me with chemistry assessment
Lera25 [3.4K]

Answer:

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Explanation:

7 0
1 year ago
How many atoms are in 0.31 moles
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1 mole contains = 6.02x10^23 atoms. 0.31mole contains = 0.31x6.02x10^23 = 1.8662x10^23.
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