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melamori03 [73]
3 years ago
5

Density = 7g/ml volume = 10ml

Chemistry
1 answer:
ipn [44]3 years ago
8 0
What are you trying to find out?
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Imagine a cell with a semi-permeable membrane that is selective to K+ ions only. The internal solution contains 100 mM KCl and t
Scrat [10]

Answer:

Ek = (RT/zF)*ln ( [k+]o/[K+]i )

Explanation:

R = gas constant (8.31 J/Kmol)

T = Temperature (k)

F = Faraday constant (9.65 * 10exp4 coulomb/mole)

z = valence of the ion (1)

[k+]o = Extracellular K concentration in mM

[K+]i = Intracellular K concentration in mM

ln = logarithm with base e

7 0
3 years ago
What is the conservation of mass
adelina 88 [10]

Answer: This is the definition if that's what you want.

Explanation:The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as system's mass cannot change, so quantity can neither be added nor be removed.

8 0
3 years ago
Which is a chemical property of hydrogen?
larisa86 [58]

Answer:

<em>Option</em><em> b</em><em>)</em><em> </em><em>It </em><em>is </em><em>a </em><em>combustible</em><em> </em><em>gas </em><em>.</em>

<em><u>maybe</u></em><em><u> this</u></em><em><u> </u></em><em><u>might</u></em><em><u> help</u></em><em><u> u</u></em>

3 0
3 years ago
Which element provides strength to bones?<br><br> sulfur<br> phosphorus<br> nitrogen<br> hydrogen
Vlad1618 [11]

Answer:

Phosphorus

Explanation:

3 0
3 years ago
Read 2 more answers
21 pts. Sodium reacts with oxygen to produce sodium oxide as described by the balanced equation below. If 54.1g of sodium reacts
Aleksandr [31]
First, calculate the amount fo Na2O that should be produced with the given amount of sodium using proper dimensional analysis and  the balanced chemical reaction,

   theoretical amount of Na2O = (54.1 g of Na)(1 mol Na/23 g Na)(2 mos Na2O/4 mols Na)(62 g Na2O/ 1mol Na2O)
       
      theoretical amount of Na2O = 72.9 g of Na2O


Calculation of percent yield,

                % yield = (61.8 g Na2O) / (72.9 g of Na2O) x 100%
                 % yield = 84.75%

Answer: 84.75%
8 0
3 years ago
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