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Rom4ik [11]
3 years ago
15

What is the one or two letter character used to identify an element?

Chemistry
2 answers:
Aleksandr-060686 [28]3 years ago
8 0
A. element symbol!!!
rodikova [14]3 years ago
5 0
It’s element symbol so nitrogen stands for N
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5400 L to KL<br> With work??
Gnesinka [82]

Answer:

5.4KL

Explanation:

Divide by 1000

3 0
3 years ago
When might a plot of ln[a] vs time not yield a straight line?
podryga [215]
Considering a reaction:
A → B
The rate equation may be described as:
r = -k[A]ⁿ
Taking the natural log,
ln(r) = -nln([A]) + ln(k)
Therefore, the only time the graph of ln[A] vs time will be a straight line is when the order of the reaction is 0, meaning the reaction is independent of reactant concentration.
6 0
4 years ago
A gas at 300 k and 4.0 atm is moved to a new loacation with a temperature of 250 k. The volume changes from 5.5 L to 2.0 L. What
alexgriva [62]
Answer is: <span>the pressure of the gas is 9,2 atm.
</span>p₁ = 4,0 atm.
T₁ = 300 K.
V₁ = 5,5 L.
p₂ = ?
T₂ = 250 K.
V₂ = 2,0 L.
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</span>p₁V₁/T₁ = p₂V₂/T₂.
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0,0733 = 0,008p₂.
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4 0
3 years ago
How many grams of NO are required to produce 145 g of N2 in the following reaction?
V125BC [204]

Answer:

b. 186 g

Explanation:

Step 1: Write the balanced equation.

4 NH₃(g) + 6 NO(g) → 5 N₂(g) + 6 H₂O(l)

Step 2: Calculate the moles corresponding to 145 g of N₂

The molar mass of nitrogen is 28.01 g/mol.

145g \times \frac{1mol}{28.01 g} =5.18 mol

Step 3: Calculate the moles of NO required to produce 5.18 moles of N₂

The molar ratio of NO to N₂ is 6:5.

5.18molN_2 \times \frac{6molNO}{5molN_2} = 6.22molNO

Step 4: Calculate the mass corresponding to 6.22 moles of NO

The molar mass of NO is 30.01 g/mol.

6.22mol \times \frac{30.01g}{mol} =186 g

4 0
3 years ago
A __ is a continuous range of a single feature such as wavelength
Gwar [14]
Hey there! 

The correct answer to your question is: Spectrum
 
A spectrum, by definition, is a range of colors which are produced by separating certain colors of light. 

Thank you! 
6 0
3 years ago
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