All categories

3 years ago

What is a line graph

Chemistry

1 answer:

Ymorist [56]3 years ago

7 0

A line graph is a graph that shows data connected by line segments.

You might be interested in

Part A Which acid in each of the following pairs has the stronger conjugate base? Match the words in the left column to the appr

vichka [17]

Answer:

H₂S

H₂CO₃

NH₄⁺

Explanation:

Which acid in each of the following pairs has the stronger conjugate base?

According to Bronsted-Lowry acid-base theory, the weaker an acid, the stronger its conjugate acid. Especially for weak acids, pKa gives information about the strength of such acid. The higher the pKa, the weaker the acid.

Of the acids HCl or HF, the one with the stronger conjugate base is HF because it is a weak acid.

Of the acids H₂S or HNO₂, the one with the stronger conjugate base is H₂S because it is a weaker acid. pKa (H₂S) = 7.04 > pKa (HNO₂) = 3.39

Of the acids H₂CO₃ or HClO₄, the one with the stronger conjugate base is H₂CO₃ because it is a weak acid.

Of the acids HF or NH₄⁺, the one with the stronger conjugate base is NH₄⁺ because it is a weaker acid. pKa (HF) = 3.17 < pKa (NH₄⁺) = 9.25

6 0

2 years ago

Draw the structure of tofacitinib with explicitly shown all carbon and hydogen atoms. identify the number of carbon atoms in tof

Andrew [12]

The structure of tofacitinib with explicit carbon and hydrogen is the first attached picture.

The number of carbon atoms in tofacitinib are 16.

The molecular formula of tofacitinib is $C_{16}H_{20}N_{6}O$ .

The structure of tofacitinib with all the filled hydrogen atoms is the second attached picture.

3 0

2 years ago

How many molecules of excess reactant remain after the reaction is complete?

vazorg [7]

8

It’s 8 bc I said it was 8 ;)

5 0

2 years ago

When using ion-selective electrodes, to compensate for a complex or unknown matrix, the _____________ method can be used to dete

VMariaS [17]

When using ion-selective electrodes, to compensate for a complex or unknown matrix, the standard addition method can be used to determine the analyte concentration. Option D

<h3>What are ion-selective electrodes?</h3>

Analytical chemistry is a science that deal with the measurement and detection of the accurate amount of a substance. Analytical chemistry plays a large role in environmental management as it helps in the determination of the levels of contaminants in a sample.

An ion selective electrode is used in analytical chemistry to measure the amount of a target ion by converting its activity into a measurable electrical signal.

Hence, when using ion-selective electrodes, to compensate for a complex or unknown matrix, the standard addition method can be used to determine the analyte concentration.

Learn more about ion-selective electrodes:brainly.com/question/14987024

#SPJ1

7 0

1 year ago

What is the formula for dinitrogen pentoxide? A)NO5 B)N5O2 C)N2O5 D)N2O7

Juliette [100K]

Answer:

nick gur

Explanation:

5 0

2 years ago

Read 2 more answers