Answer:
333g/L
Explanation:
The moles of CaCl2 in 6mEq are:
6mEq * (1mmol / 2mEq) = 3mmol CaCl2.
<em>2Eq / mol because the charge of Ca is 2+</em>
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The mass is:
3mmol CaCl2 * (111mg/mmol) = 333mg = 0.333g
<em>Molar mass: 2*35.5g/mol + 40g/mol = 111g/mol = 111mg/mmol</em>
The liters are:
1mL * (1L / 1000mL) = 1x10⁻³L
The concentration in grams per liter is:
0.333g / 1x10⁻³L = 333g/L
Answer:
It is not water absorbant and also the colour black, due to it's dark nature makes the person wearing the cloth feel hot. Unlike cotton, silk is not at all water absorbant as it does not absord any sweat produced in the wearers body
Answer: E. Occurs when methane gas is burned.
Explanation:
A chemical change occurs when matter undergoes a change to form a new substance with different chemical properties, and the reaction is usually not reversible.
In the case of burning methane gas (CH4) ,oxygen and methane are the reactants, while the new substance formed from the reaction are carbondioxide (CO2) and water (H2O) .
Since I cannot find the choices, I will tell you some of the benefits of electroplating in different industries. You can compare these benefits with the choices you have and choose the best fit.
1- Forms a protective layer to protect the material from the conditions of the atmosphere as the corrosion
2- Improves the appearance of some inexpensive materials and makes them look more appealing
3- Can enhance the electrical conductivity of materials
4- electroplating of zinc-nickel or gold can survive high temperatures
5- Sometimes hardens the material
6- Increases the thickness of the material
