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mylen [45]
4 years ago
14

How many significant numbers are in 50 ?

Chemistry
1 answer:
zalisa [80]4 years ago
4 0

Answer:

4 significant numbers

Explanation:

there are 4 significant figures in 50.00 . The zeros in this number are trailing zeros in a number that has a decimal point.

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just olya [345]

Answer:

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Explanation:

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3 0
3 years ago
what is the total number of grams of NaOH needed to react completely with 196 grams of H2 SO4? regents
8090 [49]

Answer:

160 g

Explanation:

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

For H_2SO_4:-  

Mass of H_2SO_4 = 196 g

Molar mass of H_2SO_4 = 98 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Moles= \frac{196\ g}{98\ g/mol}

Moles\ of\ Sulfuric\ acid= 2\ mol

According to the given reaction:

2NaOH+H_2SO_4\rightarrow Na_2SO_4+2H_2O

1 mole of sulfuric acid reacts with 2 moles of NaOH

So,  

2 moles of sulfuric acid reacts with 2*2 moles of NaOH

Moles of NaOH must react = 4 moles

Molar mass of NaOH = 40 g/mol

<u>Mass = Moles*molar mass = 4\times 40\ g = 160 g</u>

3 0
4 years ago
How does the introduction of invasive species, such as the brown tree snake, upset the stability of an ecosystem?
adoni [48]
Think of the environmental food chain
4 0
3 years ago
Read 2 more answers
Classify each of the following as a path function or a state function.
mel-nik [20]

Answer:

Work  = Path function.

Energy  = State function.

Distance traveled  = Path function.

Enthalpy  = State function.

Heat = Path function.

Explanation:

Hello,

At first, a state function is a property whose value does not depend on the path taken to reach that specific function or value, as in this case, energy and enthalpy.

On the other hand, path functions are functions that depend on the path taken to reach that specific value, as in this case, work, distance traveled and heat since different paths will provide different values for each one of them.

Best regards.

6 0
4 years ago
Convert 0.5 moles of oxygen to molecules of oxygen
erik [133]
Oxygen's atomic weight is 16.00 amu. 1 mole of oxygen is 6.02 x 1023 atoms of oxygen 1 amu = 1.661 x 10-24g What is the molar mass (g/mole) of oxygen? Molar mass (in grams) is always equal to the atomic weight of the atom! Molar mass (in grams) is always equal to the atomic weight of the atom!
4 0
4 years ago
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