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Genrish500 [490]
3 years ago
6

When humans burn fossil fuels, most of the the carbon quickly enters the atmosphere as carbon dioxide in the atmosphere in the p

rocess called
•transpiration
•combustion
•decomposition
•photosynthesis ​
Chemistry
2 answers:
shepuryov [24]3 years ago
7 0
Pretty sure it’s combustion. The typical equation looks like this:

Any amount of Hydrocarbons (CH4 and C2H6 and are examples of them) plus Oxygen gas (O2) will ALWAYS yield Carbon Dioxide gas and Steam
nevsk [136]3 years ago
6 0
Transpiration i think
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2 years ago
When you finish using the compound brightfield microscope, what should you have your lab instructor do?
ira [324]

Answer:

To check if it's properly cleaned.

Explanation:

When you finish using a microscope, you have to take out all your samples you were using and make sure it is completely clean so that no further contamination affects future sample analysis.

Also when you begin to use it, make sure it is clean so that when you analyze your sample(s) are free from other unexpected agents.

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There are _____ major plates that make up the most of the continents and the Atlantic and Pacific Ocean.
nasty-shy [4]

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6 0
2 years ago
Read 2 more answers
Cobalt-60 is a strong gamma emitter that has a half- life of 5.26 yr. The co balt-60 in a radiotherapy unit must be replaced whe
Alenkasestr [34]

<u>Answer:</u> The sample of Cobalt-60 isotope must be replaced in January 2027

<u>Explanation:</u>

The equation used to calculate rate constant from given half life for first order kinetics:

t_{1/2}=\frac{0.693}{k}

where,

t_{1/2} = half life of the reaction = 5.26 years

Putting values in above equation, we get:

k=\frac{0.693}{5.26yrs}=0.132yrs^{-1}

Rate law expression for first order kinetics is given by the equation:

k=\frac{2.303}{t}\log\frac{[A_o]}{[A]}

where,

k = rate constant = 0.132yr^{-1}

t = time taken for decay process = ? yr

[A_o] = initial amount of the sample = 100 grams

[A] = amount left after decay process =  (100 - 75) = 25 grams

Putting values in above equation, we get:

0.132=\frac{2.303}{t}\log\frac{100}{25}\\\\t=10.5yrs

The original sample was purchased in June 2016

As, June is the 6th month of the year, which means the time period will be 2016+\frac{6}{12}=2016.5

Adding the time in the original time period, we get:

2016.5+10.5=2027

Hence, the sample of Cobalt-60 isotope must be replaced in January 2027

3 0
3 years ago
9. Which of these substances have a higher specific heat, and why?
bulgar [2K]

Answer:

C

Explanation:

water has the highest specific heat capacity of any liquid,as a hydrogen bond

8 0
2 years ago
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