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ch4aika [34]
2 years ago
12

I cant remember my mass, grams, and volume. and how to divide density

Chemistry
1 answer:
Bas_tet [7]2 years ago
7 0
Mass divide by volume

M
__
V
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What is the osmotic pressure, in torr, of a 3.00% solution of NaCl in water when the temperature of the solution is 45 ºC? Enter
Anit [1.1K]

213034 torr is the osmotic pressure.

Explanation:

osmotic pressure is calculated by the formula:

osmotic pressure= iCrT

where i= no. of solute

c= concentration in mol/litre

R= Universal Gas constant

T = temp

It is given that solution is 3% which is 3gms in 100 ml.

let us calculate the concentration in moles/litre

3gm/100ml*1000ml/1L*1mol NaCl/55.84g NaCl

= 5.372 gm/litre

Putting the values in the formula,                   Temp in Kelvin 318.5K

osmotic pressure= 2*5.372*0.083 * 318.5                 Gas constant  0.083

                              = 284.023 bar or 213018 torr.                 c=  5.372 moles/L                                                                              

                                                                                    i=2 for NaCl

4 0
3 years ago
Consider the temperature versus time graph below. I which region is the substance in both the solid phase and the liquid phase?
SVEN [57.7K]

Answer:

2

Explanation:

The change of state occurs at a constant temperture and pressure. In the grahp we can see while the time passes, the temperature doesn't change.

The rect number 4 correspond to a liquid-gas phase

8 0
3 years ago
Read 2 more answers
desicribe the relationship between an inner planets distance from the sun and its period of revolution?
Anit [1.1K]

Kepler’s third law exhibits the relationships between the distance of a planet from the sun and the period of its revolution. Kepler’s third law is also sometimes referred to as the law of harmonies.

Kepler’s third law compares the orbital period and the radius of an orbit of a planet to the distance of the planet to the sun. It states mathematically that the more distant a planet is from the sun the greater its orbital period will be. The period of revolution of a planet is measured in days, weeks, months or years. For example, Earth’s period of revolution is 365 days.

6 0
2 years ago
What is missing from the temperature and volume graph shown at right?
Kaylis [27]

Answer: Three things are missing:


i) Graph title.


ii) Label for the vertical axis.


iii) The scale and the units for the horizontal axis.


Justification:


1) Find the graph in the image attached.


2) What does the graph represent? You cannot tell because it does not show the tittle.


Since you are told in the statement that it is a temperature and volume graph, the appropiate title would be:


Temperature vs. Volume.


3) The vertical axis also must be properly labeled, including the units.


A good label for the vertical axis of this graph might be: Volume (cm³). It migh also be liters, gallons, or other volume unit.


4) Although the horizontal axis is labeled, it does not indicate the units and the scale. So, you know neither if the temperature shown is celsius, (°C), farenheti (°F), kelvin (K), or rankine (R) (those are the four major scales of temperature), nor how much each division represent (1, 5, 10, 10, 50, 100?)

4 0
3 years ago
Space shuttle engines combine liquid hydrogen and liquid oxygen to produce an explosive reaction which releases great amounts of
Anastasy [175]
H2 + O -> H2O

I'm pretty sure that's the answer, just tell me if I'm wrong.
6 0
2 years ago
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