Beginning with commercial grade hydrochloric acid, 1.00 • 10^2 mL of a 12.4 M HCl is added to water to bring the total volume if the solution to 0.820L. What is the concentration of this new solution?

Answers

Answer 1

Answer: Concentration=mass/volume.

This should help.

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Why does tying the arm above the elbow make veins in the forearm more visible?

Answers

The tying results in the more visible veins of upper arms due to blood flow restriction.

Veins are the part of circulatory system in the body, that functions to carry deoxygenated blood from different parts of the body to the heart.

The venipuncture has been the process of insertion of drugs or chemicals in a body through vein. The veins of the upper arm has been tied to make them more visible.

The upper arm veins are more visible as there has been blood flow restriction in the veins by tying that results in the bulging out of the vein.

For more information about veins, refer to the link:

brainly.com/question/9726668

In this redox reaction, identify the reducing agent.2MgO → 2Mg + O2

A.
H2O

B.
Mg

C.
MgO

D.
O

Answers

Answer:

Magnium

Explanation:

Reducing agent loses electrons

The students who conducted the shadow length experiment concluded that their results concluded that their results supported their hypothesis. Can their supported hypothesis be called a scientific theory? Why or why not?

Answers

Confirmation bias, also called confirmatory bias or myside bias, is the tendency to search for, interpret, favor, and recall information in a way that confirms one's preexisting beliefs or hypotheses, while giving disproportionately less consideration to alternative possibilities.[Note 1][1] It is a type of cognitive bias and a systematic error of inductive reasoning. People display this bias when they gather or remember information selectively, or when they interpret it in a biased way. The effect is stronger for emotionally charged issues and for deeply entrenched beliefs. People also tend to interpret ambiguous evidence as supporting their existing position. Biased search, interpretation and memory have been invoked to explain attitude polarization (when a disagreement becomes more extreme even though the different parties are exposed to the same evidence), belief perseverance (when beliefs persist after the evidence for them is shown to be false), the irrational primacy effect (a greater reliance on information encountered early in a series) and illusory correlation (when people falsely perceive an association between two events or situations).

How are chemical changes of matter related to the organization of the periodic table

Answers

Chemical changes of matter are related to electronic configuration which is same along a group in case of valence shell in the periodic table.

What is periodic table?

Periodic table is a tabular arrangement of elements in the form of a table. In the periodic table, elements are arranged according to the modern periodic law which states that the properties of elements are a periodic function of their atomic numbers.

It is called as periodic because properties repeat after regular intervals of atomic numbers . It is a tabular arrangement consisting of seven horizontal rows called periods and eighteen vertical columns called groups.

Elements present in the same group have same number of valence electrons and hence have similar properties while elements present in the same period show gradual variation in properties due to addition of one electron for each successive element in a period.

Learn more about periodic table,here:

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The elements are organized in groups, and the groups have the same chemical properties, therefore having similar chemical changes.

When temperature increases, what happens to the molecules in a chemical reaction?

Answers

They speed up and the reaction happens faster.

Answer As it heats up, the molecules speed up and the reaction happens faster.

Explanation:

What is the ansewer to compare and contrast i do not get it

Answers

prescription meds are ones that the doctor gives you but otc meds are ones that you can buy from a pharmacy without a prescription. they are similar because they can both treat your illnesses and pretty much work the same way

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