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3 years ago

What is an inference?

Chemistry

2 answers:

Radda [10]3 years ago

8 0

the answer is a conclusion derived from evidence and logical reasoning hope this helps:)

sp2606 [1]3 years ago

5 0

Answer:

A conclusion derived from evidence and logical reasoning

Explanation:

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Despite its very low K value at room temperature this reaction is widely used in industry to convert iron oxide into iron metal

Hoochie [10]

Answer:

Higher K at very high temperatures.

Explanation:

It is inferred is K is significantly greater at very high temperatures, allowing high production at low cost.

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3 years ago

When this happens the inward force of gravity is exactly balanced with the outward force created by _______ and _____________.

4vir4ik [10]

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3 years ago

A student measures the absorbance of a sample of red dye #3 using a spectrophotometer. If the absorbance is measured as 0.468, w

Gre4nikov [31]

Answer:

5.88 μM is the concentration of red dye in the sample.

Explanation:

Absorbance is defined s capacity of a substance to absorb a light of a specified wavelength.It is calculated by using Beer-Lambert Law:

$A=\epsilon lc$

A = absorbance

$\epsilon$ = Molar absorptivity

c = concentration

l = Length of the solution through which light passes

Given, A = 0.468, l = d = 1.00 cm,c = ?

$\epsilon =7.96\times 10^4 M^{-1} cm^{-1}$

$A=\epsilon lc$

$0.468=7.96\times 10^4 M^{-1} cm^{-1}\times 1.00 cm\times c$

$c=5.8793\times 10^{-6} mol/L=5.8793 mol/(\mu L)\approx 5.88mol/(\mu L)$

( $1 L= 1,000,000 \mu L$ )

5.88 μM is the concentration of red dye in the sample.

5 0

4 years ago

2 Which chemical reaction is exothermic and why A 25 degrees after 25 minutes B 23 degrees after 15 minutes C 30 degrees after 2

baherus [9]

Answer:

C 30 degrees after 25 minutes

Explanation:

A reaction is exothermic if heat is evolved as the reaction proceeds. How do we know if heat was given out in the course of the reaction? We have to measure the temperature of the system using a thermometer as the reaction progresses.

If the temperature becomes higher than room temperature (25 degrees), we can now conclude that the reaction is exothermic and heat was indeed given out during the course of the reaction.

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3 years ago

Draw the electron dot structure for the hydrogen carbonate ion hco3-. Carbon is the central atom, and hydrogen is attached to ox

Anna11 [10]

Explanation:

this is your answer hope it will help you

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2 years ago