Answer:
Water and NaCl moves to the direction of sucrose
Explanation:
The semipermeable membrane Will allow NaCl since it ionizes and forms smaller individual ions, whereas the sucrose molecules doesn't ionize hence are the biggest molecules and would not pass through the membrane due to concentration gradient
Answer:
4 - 1 - 3 - 2 - 6 - 5
Explanation:
During an engineering process, first, we need to identify the problem, or the need because the process only will occur because of some need. Then, it's necessary to know as much as possible about the problem and the things that already exist or already were tested to solve it. Knowing the background will make the work easy.
After that, it's necessary to plan the things we'll do, knowing the costs, the time needed for activities, how many people will be necessary for each step, etc. It's really important to make a plan. Then, do the work, following the plan. Thus, the process must be tested. During the test of the results, some problems must be found, so it's time to evaluate and redesign the process, to solve these problems found.
Answer: Option (d) is the correct answer.
Explanation:
A change that does not cause any difference in chemical composition of a substance are known as physical change.
For example, shape, size, mass, volume, density, etc of a substance are all physical changes.
And, a change that causes changes in chemical composition of a substance is known as chemical change.
For example, precipitation, reactivity, toxicity etc are chemical change.
Therefore, change in temperature, chemical precipitation of a solid
, production of a gas are all indications of a chemical change.
Thus, we can conclude that change in volume would not necessarily indicate a chemical reaction.
Answer:
![\Large \boxed{\sf 34.2 \ g}](https://tex.z-dn.net/?f=%5CLarge%20%5Cboxed%7B%5Csf%2034.2%20%5C%20g%7D)
Explanation:
Mole ratio
![9:4](https://tex.z-dn.net/?f=9%3A4)
![1.75:x](https://tex.z-dn.net/?f=1.75%3Ax)
Moles of CO₂
![\displaystyle \frac{4 \times 1.75}{9} =0.78](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cfrac%7B4%20%5Ctimes%201.75%7D%7B9%7D%20%3D0.78)
Use formula to find mass
![\displaystyle moles=\frac{mass}{M_r}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20moles%3D%5Cfrac%7Bmass%7D%7BM_r%7D)
Relative molecular mass of CO₂ = 12 + 16 × 2 = 44
![\displaystyle 0.78=\frac{mass}{44}](https://tex.z-dn.net/?f=%5Cdisplaystyle%200.78%3D%5Cfrac%7Bmass%7D%7B44%7D)
![mass=34.2](https://tex.z-dn.net/?f=mass%3D34.2)