Answer:
Collid
Explanation:
Toothpaste is a colloid, because it's part solid and part liquid. ... A colloid is a heterogeneous mixture of two substances of different phases. Shaving cream and other foams are gas dispersed in liquid. Jello, toothpaste, and other gels are liquid dispersed in solid.
Answer:
As you can see from the picture, about half the moon is visible.
Half = 1/2 = 50%
So, C is the correct answer.
Let me know if this helps!
Answer:
D
Explanation:
The answer will be D because as we can deduct from the hypothesis, he will try to control the amount of food he gives the rats in order to see if in fact the fue of the mouse will be shinier
Answer:
90g of Ca(OH)2
Explanation:
2HCl + Ca(OH)2 —> CaCl2 + 2H20
Molar Mass of Ca(OH)2 = 40 + 2( 16 + 1) = 40 + 2(17) = 40 + 34 = 74g/mol
Molar Mass of CaCl2 = 40 + (2 x 3.5) = 40 + 71 = 111g/mol
From the equation,
74g of Ca(OH)2 produced 111g of CaCl2.
Therefore, Xg of Ca(OH)2 will produce 135g of CaCl2 i.e
Xg of Ca(OH)2 = (74 x 135) / 111 = 90g.
Therefore, 90g of Ca(OH)2 are required to produce 135g of CaCl2
I’m pretty sure it’s sulphur dioxide