Answer:
6. solar eclipsis
7. drive less fuel efficient vehicles
Explanation:
these are the only questions i get but i still hope this helps :)
#1 is 6
#2 During chemistry lab, Mrs. Black’s students placed an antacid tablet in a zip lock bag. They recorded the mass of the tablet in the bag. Then they carefully added 50 grams of water and quickly sealed the bag. The tablet began to fizz and soon disappeared. The bag was filled with gas and it felt cold to the touch.
Answer: Mendeleev's periodic law : The properties of element are a periodic function of the atomic masses . Limitations:-(1)positions of hydrogen is not correctly placed. (2) The positions of isotopes could not be explained . For ex:- cl35 are cl37 are placed in the same group.
Explanation:
Answer:
red
Explanation:
Benedict's solution -
It is the chemical composition of copper(II) sulfate pentahydrate , sodium citrate and sodium carbonate .
The solution of Benedict is used to test sugars , like glucose.
The color of Benedict's solution is blue.
And the reaction with various sugars changes the color of the solution.
The color change is usually from blue to yellow , green , brick red , depending on the concentration of the sugar.
- In case of low concentration of glucose , the color change is from blue to green / yellow.
And ,
- In case of high concentration of glucose , the color change is from blue to red.
