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lord [1]
3 years ago
11

Can somebody plz help answer all these true and false questions CORRECT!!

Chemistry
1 answer:
goldfiish [28.3K]3 years ago
7 0

Answer:

1-T

2-F

3-T

4-T

Explanation:

big brain

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What is an example of a gas in motion and a fluid in motion?
rodikova [14]

Answer:

Gas in motion : Vaporization

Examples of fluid flow :

  1. A river flowing down a mountain
  2. Air passing over a bird's wing
  3. Blood moving through a circulatory system
  4. Fuel moving through an engine.

Explanation:

4 0
3 years ago
How does it feel like to drown
kykrilka [37]

Answer:

when you drown your lungs fill up with water so it like severe pain that won't go away until your dead so it like drink milk through nose imagine that and you can't breath that is what it is like to drown

Explanation:

3 0
3 years ago
In chemistry-what is a catalyst
nika2105 [10]
A catalyst is a substance that decrease the activation energy needed to start a reaction.
4 0
4 years ago
Calcium chloride, CaCl2, is commonly used as an electrolyte in sports drinks and other beverages, including bottled water. A sol
zhannawk [14.2K]

Answer:

Mole percent of CaCl_{2} in solution is 1.71%

Explanation:

Number of moles of a compound is the ratio of mass to molar mass of the compound.

Molar mass of CaCl_{2} = 110.98 g/mol

Molar mass of H_{2}O = 18.02 g/mol

Density is the ratio of mass to volume

So, mass of 60.0 mL of water = (60\times 0.997)g=60.8g

Hence, 6.50 g of CaCl_{2} = \frac{6.50}{110.98}moles of CaCl_{2} = 0.0586 moles of CaCl_{2}

60.8 g of H_{2}O= \frac{60.8}{18.02}moles of H_{2}O = 3.37 moles of H_{2}O

So, mole percent of CaCl_{2} in solution = \frac{n_{CaCl_{2}}}{n_{total}}\times 100% = \frac{0.0586}{0.0586+3.37}\times 100% = 1.71%

5 0
4 years ago
C3H8 (g)+ 502 (g)  3CO2 (g) + 4 H2O (g) + 531 kcal
aniked [119]

Answer:

Exotérmica.

Explanation:

¡Hola!

En este caso, dado que la mayoría de reacciones de combustión son exotérmicas, al generar calor en los productos, es posible inferir que esta reacción, referida a la combustion de metano es exotérmica debido a lo anteriormente mencionado, ya que el término de energía de reacción, 531 kcal, está al lado de los productos, lo que quiere decir que es energía generada.

¡Saludos!  

5 0
3 years ago
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