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3 years ago

I need help on #'s 4 and 5

Chemistry

1 answer:

kompoz [17]3 years ago

3 0

The answer for four is frequency.

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Why foodstuff with acid components should not be stored in aluminium containers why?

adell [148]

Answer:

Hey dear, foodstuff with acid components should not be stored in aluminum utensils because Aluminum is one of the most reactive metal which can easily react with acid to form toxic substances which can effect our health .

HOPE THIS HELPED!!!!!!XDDD

6 0

3 years ago

How many moles of atoms are in 6.00 g of 13C?

Lyrx [107]

Answer: 0.462 moles

Explanation: 13C indicates an isotope of carbon and its mass number is 13. It means the mass of 1 mol of 13C is 13 gram.

The question asks to calculate the number of atoms present in 6.00 grams of 13C.

To calculate the number of moles we divide the given grams by the mass of 1 mol of the element. The set could be shown easily using dimensional analysis as:

$6.00gram(\frac{1mol}{13gram})$

= 0.462 moles

So, there will be 0.462 moles of atoms in 6.00 grams of 13C.

4 0

3 years ago

Read 2 more answers

What is the molarity of a solution which contains 0.80 mol of HCl in 250mL of<br> solution?

mariarad [96]

Answer:

3.2M HCl Solution

Explanation:

Molarity = moles of solute / volume of solution expressed in liters

moles of solute = 0.80 moles HCl

volume of solution = 250 ml = 0.250 Liter

Molarity (M) = 0.80 moles HCl / 0.250 Liters = 3.2M HCl Solution

6 0

2 years ago

Which chemical formula corresponds to this structural formula?

lys-0071 [83]

I think the answer is choice D

8 0

3 years ago

Read 2 more answers

I'd really appreciate help- this is due in around 8 hours :"D

Fed [463]

Answer:

atomic #= 1

protons equals one
Number of neutrons equals to 0
number of electrons equal to 1
mass number equals to 1

atomic number equals to 1
Protons equals to 1
number of neutrons equals to 0
number of electrons equals to 0 because the plus sign means that it loses an electron
mass number equals to 1

atomic number 17
number of protons 17
number of neutrons 18
number for electrons 18 Because negative sign means It's an anion which means it gains an electron
mass number 35

12
12
12
10 loses 2 its a cation
24

47
47
108-47 = 61
46 loses 1
108

16
16
32-16 =16
18 it gains 2 electrons
32

there u go

7 0

2 years ago