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Mrrafil [7]
2 years ago
9

Place the parts of the human circulatory system in order from highest to lowest degree of internal organization.

Chemistry
2 answers:
Softa [21]2 years ago
8 0

Answer:

cell tissue organ and system

balandron [24]2 years ago
6 0
The answer is Cell tissue organ and system. Hope this helps!!
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How many moles of na2co3 are necessary to reach stoichiometric quantities with cacl2
lbvjy [14]

0.0102 moles Na₂CO₃ = 1.08g of Na₂CO₃ is necessary  to reach stoichiometric quantities with cacl2.

<h3>Explanation:</h3>

Based on the reaction

CaCl₂ + Na₂CO₃ → 2NaCl + CaCO₃

1 mole of CaCl₂ reacts per mole of Na₂CO₃

we have to calculate how many moles of CaCl2•2H2O are present in 1.50 g

  • We must calculate the moles of CaCl2•2H2O using its molar mass (147.0146g/mol) in order to answer this issue.
  • These moles, which are equal to moles of CaCl2 and moles of Na2CO3, are required to obtain stoichiometric amounts.
  • Then, we must use the molar mass of Na2CO3 (105.99g/mol) to determine the mass:

<h3>Moles CaCl₂.2H₂O:</h3>

1.50g * (1mol / 147.0146g) = 0.0102 moles CaCl₂.2H₂O = 0.0102moles CaCl₂

Moles Na₂CO₃:

0.0102 moles Na₂CO₃

Mass Na₂CO₃:

0.0102 moles * (105.99g / mol) = 1.08g of Na₂CO₃ are present

Therefore, we can conclude that 0.0102 moles Na₂CO₃  is necessary.to reach stoichiometric quantities with cacl2.

To learn more about stoichiometric quantities visit:

<h3>brainly.com/question/28174111</h3>

#SPJ4

7 0
2 years ago
What is plasma and how /why does it form
Hunter-Best [27]

Answer:

I can answer 1 part Plasma is the fluid part of blood at least in bio(srry if it doesnt work)

Explanation:

7 0
3 years ago
One chemical property that can be measured in a substance is its reactivity with water. What is another chemical property? Densi
emmasim [6.3K]
Solubility in water is another property
5 0
3 years ago
In a 4th period battle, the girls were able to overcome the in Tug-of-War. Ten boys each pulled with a force of 30 N. Six girls
cupoosta [38]

Answer:

10 N

Explanation:

4 0
2 years ago
Calculate the concentration of hydrogen ions in a healthy person’s blood that has a pH of 6.40.
adoni [48]

Answer:

[H⁺] = 3.98×10⁻⁷ M

Explanation:

Given data:

pH of blood = 6.40

Hydrogen ion concentration = ?

Solution:

Formula:

pH = - log[H⁺]

by rearranging this formula,

[H⁺] =  10⁻(pH)

By putting values,

[H⁺] = 10 ⁻⁶°⁴⁰

[H⁺] = 3.98×10⁻⁷ M

4 0
3 years ago
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