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inysia [295]
3 years ago
8

Round your answer to the correct number of significant figures or decimal places: 0.005-0.0007=

Chemistry
1 answer:
Grace [21]3 years ago
4 0

Answer:

0.0043

0.004 if to one significant figure

0 to one decimal place.

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"What quantitative measurement and qualitative observations can be made about the interactions of matter and energy?" can someon
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4 years ago
A 0.2722 g sample of a pure carbonate, X n CO 3 ( s ) , was dissolved in 50.0 mL of 0.1200 M HCl ( aq ) . The excess HCl ( aq )
Alex73 [517]

Answer:

0.00369 moles of HCl react with carbonate.

Explanation:

Number of moles of HCl present initially = \frac{0.1200}{1000}\times 50.0 moles = 0.00600 moles

Neutralization reaction (back titration): NaOH+HCl\rightarrow NaCl+H_{2}O

According to above equation, 1 mol of NaOH reacts with 1 mol of 1 mol of HCl.

So, excess number of moles of HCl present = number of NaOH added for back titration = \frac{0.0980}{1000}\times 23.60 moles = 0.00231 moles

So, mole of HCl reacts with carbonate = (Number of moles of HCl present initially) - (excess number of moles of HCl present) = (0.00600 - 0.00231) moles = 0.00369 moles

Hence, 0.00369 moles of HCl react with carbonate.

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3 years ago
What kind of bond is formed when electrons are gained or lost ?
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4 years ago
What is the value of 100 ºC on the Kelvin scale? A. 100 K B. 273 K C. 373 K D. -373 K E. -300 K
insens350 [35]

Answer:

373.15 K

Explanation:

Given data:

Temperature in degree Celsius = 100°C

Temperature in kelvin scale = ?

Solution:

To convert the degree Celsius into kelvin scale we add the given  degree Celsius  into 273.15.

100°C +273.15 =  373.15 K

6 0
3 years ago
Read 2 more answers
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