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Luba_88 [7]
3 years ago
13

Please i need the answer im dying here ;-

Chemistry
2 answers:
ELEN [110]3 years ago
8 0

Answer:

anawer is none of the above

Serggg [28]3 years ago
7 0

Answer:

i think none of the above is the answer

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Ionic bonding occurs when ______ atom donates one or more _______ to a _______ atom
Svetllana [295]

Answer:

ionic bonding occurs when unstable atoms donates one or more valence electrons to a unstable atom

Explanation:

7 0
2 years ago
I NEED THE ANSWER TO NUMBER 3 pleaseee
postnew [5]

Answer:

density = 2.769 g

Explanation:

4.26 times 0.65

3 0
3 years ago
A mixture with H2 and He exerts a total pressure of 0.48 atm. If there is 1.0 g of H2 and 1.0 g of He in the mixture, what is th
lara [203]

Answer is: the partial pressure of the helium gas is 0.158 atm.

p(mixture) = 0.48 atm; total pressure.

m(H₂) = 1.0 g; mass of hydrogen gas.

n(H₂) = m(H₂) ÷ M(H₂).

n(H₂) = 1.0 g ÷ 2 g/mol.

n(H₂) = 0.5 mol; amount of hydrogen.

m(He) = 1.0 g; mass of helium.

n(He) = 1 g ÷ 4 g/mol.

n(He) = 0.25 mol; amount of helium.

χ(H₂) = 0.5 mol ÷ 0.75 mol.

χ(H₂) = 0.67; mole fraction of hydrogen.

χ(He) = 0.25 mol ÷ 0.75 mol.

χ(He) = 0.33; mole fraction of helium.

p(He) = 0.33 · 0.48 atm.

p(He) = 0.158 atm; the partial pressure of the helium gas.

8 0
3 years ago
How many atoms are in 20.6 moles of curium
Harman [31]

Answer: 1.24 × 10^25

Explanation:

\frac{20.6 moles}{1} × \frac{6.022 * 10^{24} }{1 Mole}

Using our knowledge in unit conversions, we know the mole units cancel each other out and all there's left is the atom unit. From here we can multiply the fractions and eventually we end with the number 124.0532 × 10^23

According to the scientific notation rules, the number to the left of the decimal cannot exceed 10 so we have to move the decimal to the left two spaces. With this change, we also have to change the exponent of the 10. Because we moved the decimal point two spaces to the left, that means we have 10^25.

4 0
3 years ago
Hey man forgets that he said his coffee cup on the top of his car he starts to drive in the coffee cup rolls off the car onto th
Lyrx [107]
It would move due to it not being<span> the same speed and in the same direction so it is acted upon by an unbalanced force.</span>
8 0
3 years ago
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