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aliina [53]
3 years ago
7

Which of the following terms is defined as "a point of view based on personal

Biology
1 answer:
Marina86 [1]3 years ago
4 0

Answer:

"The hypothesis"

Explanation:

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Calcule la molalidad de una<br> 20g Ca Cl₂ en 250g de<br> que contiene<br> solucion<br> H₂O.
ahrayia [7]

Answer:

The solution is 0, 90 molal. See the explanation below, please

Explanation:

Molality is defined as moles of solute in 1 kg of solvent (1000 grams). The following three simple rule must be performed:

We calculate the weight of 1 mol of CaCl2

Weight Ca =40, 078 g

Weight Cl= 35, 453 g

Weight of 1 mol of CaCl2=40, 078g + 2x (35, 453g )= 110, 98g

110, 98 g ---1 mol

25 g---X= (25g x1 mol)/110, 98g= 0,23mol

250g solvent -----0,23 mol CaCl2 (the solute)

1000g solvent ----X = (1000g x0,23mol)/250g =0,90 mol solute

The solution is 0,90 molal

8 0
2 years ago
He wavy movement that pushes the food into next organ of digestive system is called
Anna [14]

Answer: peristalsis

Explanation:it's the contraction and relaxation of muscles as the bolus moves down the oesophagus

4 0
3 years ago
Difference between scalawags and carpetbaggers
Dmitriy789 [7]
Scalawags are from the North I think. And Carpetbaggers are from the South.

6 0
2 years ago
Read 2 more answers
What does the circulatory system do for your body?
Katena32 [7]

Answer:

The circulatory system, also known as the cardiovascular system, is a simple loop which starts, and ends, with your heart. It is a closed system, meaning blood does not enter or leave the system during its journey from your heart to your body and back again.

Explanation:

7 0
3 years ago
Compare the use of the siphon in clams and squid
inna [77]

Explanation:

  1. Siphons in Mollusca are tube-like structures in which water (or, more rarely, air) flows. The water flow is used for one or more purposes such as locomotion, feeding, respiration, and reproduction.
  2. The siphon propels the squid through the water in the opposite direction to which the siphon is pointing, much like jet propulsion. To use this jet propulsion, the squid takes in water through the large opening and then closes off the opening.

7 0
2 years ago
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