A liquid substance was placed in a beaker and a solid powdery substance was added to it. Which of the following observations will be the most reliable evidence to conclude that a chemical change has occurred?a) a change in the colour of the solutionb) a change in the volume of the solutionc) a change in the temperature of the solutiond) no evidence can be found as there will be no change​

Answer:

In the future, the increasing majority of data will come from individual users and devices .

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Answer:

Individual users and gadgets will provide the majority of the data. In 2020, each individual generated at least [tex]1.7 MB[/tex] of data each second.

Explanation:

Individual users and devices - Users and devices are owned by individuals.

Physical memory storage drives: The memory space that CPU address lines can seek directly is known as physical memory. Physical memory, such as RAM, is a memory that exists in the form of modules.

corporate office headquarters (HQ) is a location where a company's senior management, key managerial and support employees are located, as well as all of the company's significant documents and other data.

A data bank is similar to a centralised data warehouse. It can extract data from any source and then transform it into meaningful data

Explanation:

When water becomes a solid, it releases heat, warming up its surroundings. This makes freezing an exothermic reaction

Explanation:

Before answering the question, it is very important to understand what exactly happens from energetical point of view when water goes from liquid to solid.

Let's say that you start at room temperature. When water molecules are in the liquid phase, they are constantly moving around, constantly bumping and collisind with each other.

Hydrogen bonds are always being formed and broken as water molecules move past each otherAt room temperature, the liquid state is characterized by a relatively high average kinetic energy for the water molecules.

Now, in order to slow these molecules down enough so that the hydrogen bonds that are formed between individual water molecules are no longer broken, you need to take energy out of the system.

When water is in its solid state, the molecules are "stuck" in position in a crystal network. The average kinetic energy of the molecules can no longer overpower the hydrogen bonds, and so ice is formed.

This implies that heat must be given off by the system, i.e. the water, in order to slow everything down enough for the crystal to form.

As aresult, the frezing of water is an exothermic process because heat is being removed from the system.

An endothermic process would imply that heat must be supplied to the system. That is clearly not the case here, since providing heat would actually increase the average kinetic energy of the water molecules.

Melting ice is an endothermic process because you need to provide heat in order to allow the molecules to overpower the hydrogen bonds and start moving about again.

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Answer:

In 1923, he was admitted to the Bombay Bar Council and began his practice. He pleaded in the Bombay High Court as well as in the district courts of Thane, Nagpur and Aurangabad. But soon, the economist Ambedkar overwhelmed the lawyer Ambedkar. He wanted to do social work but had no time to spare.

Answer:

In 1923, he was admitted to the Bombay Bar Council and began his practice. He pleaded in the Bombay High Court as well as in the district courts of Thane, Nagpur and Aurangabad. But soon, the economist Ambedkar overwhelmed the lawyer Ambedkar. He wanted to do social work but had no time to spare.

Explanation:

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Explanation:

Mention any three differences between a living cell and a brick in a wall.

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Solution.

Living cell Brick in a wall

1. Non-rigid living structure 1. Rigid non-living structure

2. Mainly composed of cellulose 2. Mainly composed of soil

3. Freely permeable 3. Impermeable