21. For each of the following precipitation reactions,

A) What volume of base was needed to reach the equivalence point?

Elan Coil [88]

Answer:

Equivalence point titration

Explanation: Equivalent point: point in titration at which the amount of titrant added is just enough to completely neutralize the analyte solution. At the equivalence point in an acid-base titration, moles of base = moles of acid and the solution only contains salt and water.

8 0

3 years ago

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The tiny fruit fly is a superstar of genetics research. Thousands of experiments have explored how flies inherit traits. Wing sh

Scrat [10]

Answer:

idk

Explanation:

4 0

4 years ago

Which organic compound is saturated? 1.ethene 2.propene 3.ethyne 4.propane

Debora [2.8K]

1. Ethene explanation: I’m lazy ouo

5 0

3 years ago

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NEED HELP ON 31,32,33..ONLY IF YOU KNOW PLEASE

enyata [817]

Answer:

31. C

32. D

33. B

Explanation:

31. A plant cell is an eukaryotic cell i.e. it contains a membrane-bound nucleus, located CENTRALLY. The nucleus is the largest organelle in the plant cell. The cell/plasma membrane bounds the cell while the chloroplast organelle (site of photosynthesis) is also located in the plant cell. Based on this description, the image in OPTION C is correct.

32. Pottasium (K) is a highly reactive group 1 element. As stated in this question, pottasium reacts vigorously with water (H2O). This reactive property of K element is due to its valence electrons. However, elements in the same group as pottasium i.e same column on the periodic table will have the same number of valence electrons, hence, will behave chemically similar. Therefore, elements in the same column as pottasium will react the same way with water.

33. A reactant is a an element/compound in a chemical reaction that gets used up to form new products. They are usually the starting materials located on the left side of any equation. In this equation shown as:

2CuO + C → 2Cu + CO2

CuO and C are the REACTANTS while Cu and CO2 are the products.

6 0

3 years ago

A hazard is ________. An example of a hazard is ____.

Damm [24]

According to the research, a hazard is the real possibility that we will suffer some harm. An example of a hazard is free toxic gases.

<h3>What is a hazard?</h3>

It is associated with situations that have potentially harmful effects on the body, the environment or property.

In chemistry, it is understood as those conditions of potential health damage caused by uncontrolled exposure to chemical agents of various kinds, such as the release of toxic and flammable gases such as ethanol.

Therefore, we can conclude that according to the research, a hazard is the real possibility that we will suffer some harm. An example of a hazard is free toxic gases.

Learn more about a hazard here: brainly.com/question/13340017

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8 0

2 years ago