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nika2105 [10]
3 years ago
5

What is ur life about if I don't have one???????????????

Chemistry
1 answer:
IrinaVladis [17]3 years ago
8 0

ur life is special givin thing ok???

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Molarity of a salt water solution of "0.47" moles of NaCl dissolved in a volume of 0.25L
asambeis [7]

Answer:

1.88 M

Explanation:

The following data were obtained from the question:

Mole of NaCl = 0.47 mole

Volume of solution = 0.25L

Molarity =?

Molarity is defined as the mole of solute per unit litre of the solution. It can represented mathematically as:

Molarity = mole /Volume

Using the above formula, the molarity of the salt water solution can be obtained as follow:

Molarity = 0.47/0.25

Molarity = 1.88 M

5 0
3 years ago
Equal masses (in grams) of hydrogen gas and oxygen gas are reacted to form water. Which substance is limiting?
Sonbull [250]

Answer:

a. Oxygen gas is limiting

Explanation:

hydrogen gas and oxygen gas are reacted to form water

2H₂ + O₂  →  2H₂O

the above balanced equation shows that 2 moles of H₂ is required for 1 mole of O₂

Given equal masses of H₂ and O₂

assuming 'x' gm for each, no. of moles of each gas  =

no. of moles of H₂ = x/2 = 0.5x moles

no.of moles of O₂ = x/32 = 0.031x moles

This shows that no. of moles of O₂ is very less so O₂ will become the limiting reagent.

3 0
4 years ago
Read 2 more answers
Please fill in the blank: structures are fully functional, show evidence of a common ancestor, and may or may not have the same
Vinil7 [7]

Answer:

<em>Hello There. The answer is Both </em>provide evidence<em> for evolution. Homologous  </em>structures <em>are structures that are similar in related organisms because they were inherited from a </em>common ancestor. <em>These </em>structures may or may not have the same function <em>in the descendants. </em>

Hope It Helps!

7 0
3 years ago
Write a paragraph, citing examples from the text, to explain how Dr.
grigory [225]

Paul J. Chirik developed methods associated with chemistry catalysis and transition metals, which may result useful for the development of manufacturing technologies.

<h3>What is catalysis?</h3>

Catalysis refers to the chemical processes that increase the rate of different types of reactions by lowering its activation energy.

Proteins (enzymes) are biological catalysts that increase the rate of chemical reactions in biological systems.

Catalysis may be reached by using transition metals (e.g., actinium and rutherfordium), which result useful in the development of manufacturing technologies.

Learn more about catalysis here:

brainly.com/question/12507566

8 0
2 years ago
If the density of blood is 1. 060 g/ml. What is the mass of 6. 56 pints of blood?
ryzh [129]

Answer:

3290 gm

Explanation:

6.56 pints  * 473.1765 ml/pint  * 1.060 g/ml = 3290  gm  

7 0
2 years ago
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