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the answer is d electronic balance

Answer:

A metal oxide with formula K2O. Potassium oxide (K2O) is an ionic compound of potassium and oxygen. It is a base. This pale yellow solid is the simplest oxide of potassium.

1. matter

2. oxygen

3. water

4. hydrogen

5. compound

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Answer:

14 ft 7 inches

step-by-step explanation:

since each model inch corresponds to 25 real inches, 7 model inches will correspond to

7×25" = 175"

at 12" per foot, that is 14 feet, 7 inches.

Explanation:

Density is the degree of the heaviness of a particular substance.

Density is said to be the characteristic property of a pure substance because the density of a pure substance is constant and fixed

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Answer:

Next time you're just recently out of a serious relationship, and you're craving some sort of intimacy and comfort, feel confident that a rebound might actually be a good thing as long as it's an upgrade, either physically, emotionally, a fun date, or even just finding a way to shift your mentality toward viewing. so what im saying is if your happy in that relationship stay in it and if he or she becomes a meany leave it its not goo for your health

Answer:

May be trial 2..................

A hypothesis that could prove or disprove Janna’s claim is; bottle water is pure water hence it boils at 100°C.

Pure water is water that contains only hydrogen and oxygen and nothing else. Impure water contains other substances apart from hydrogen and oxygen in a ratio of 2:1.

The hypothesis of our experiment is that;" bottle water is pure water hence it boils at 100°C." A hypothesis is a tentative explanation for an observation.

We can carry out the experiment by bringing about three samples of the bottled water and insert a thermometer in each of the samples then record the initial temperature of the water. The samples are then heated to boiling point and the boiling point of each sample is recorded.

If the sample boil at exactly 100°C then the hypothesis is proven or vice versa.

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Answer:

A theory of physics in which energy exists only in discrete quantities, called quanta. It was originated in 1900 by the German physicist Max Karl Ernst Ludwig Planck (1858–1947), who suggested that electromagnetic radiation is quantized, i.e. it can be emitted or absorbed only in tiny packets, not continuously.

Explanation:

Answer:

A dunes windward side is the side where the wind is blowing and pushing material up. A dunes slip face is simply the side without wind. A slipface is usually smoother than a dunes windward side. A collection of dunes is called a dune belt or dune field.

Explanation:

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Answer:

covalent....................

Answer:

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Answer:

There are significant environmental impacts associated with coal mining and use. It could require the removal of massive amounts of top soil, leading to erosion, loss of habitat and pollution. Coal mining causes acid mine drainage, which causes heavy metals to dissolve and seep into ground and surface water.

Explanation:

Answer:

ganar tres electrones

Explanation:

Answer:

gaining three electrons

Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question

mass = 500 g

volume = 67 mL

We have

[tex]density = \frac{500}{67} \\ = 7.462686[/tex]

We have the final answer as

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Answer:

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Answer:

Dissolving the mixture in water, filtering and then perform evaporation on the filtrate

Answer:

1. mercury.

2. suspensions.

3.iodine is the solute and alcohol is the solvent.

4. A element.

Answer:

In 1932, he tried similar experiments himself, and became convinced that the radiation ejected by the beryllium was in fact a neutral particle about the mass of a proton. ... Chadwick also noted that because the neutrons had no charge, they penetrated much further into a target than protons would.

Explanation:

Answer:

Dmitri Ivanovich Mendeleev

Explanation:

Answer:

Dmitri Mendeleev

Explanation:

Answer:

Explanation:

D. solvent

Answer:

a solution

Explanation:

Verified test check.

Here is your answer look at your image below

Answer: Not possible to find average amu with only the information provided.

Explanation:

Is there more information about the other isotopes?  I don't see how one could calculate an overall atomic mass with only one isotope is known.  An isotope of 186.956 with abundance of 62.6% isn't enough information.  We're not told anything about the other isotopes:  are they larger, smaller, and at what percentage.  If one has an amu of  204.956 at 37.4%, the overall atomic mass would be quite different than if it had an atomic mass of 182.956 at 37.4%.  More infornmation is required.

A spontaneous reaction is one in which the change in free energy is negative and the standard cell potential is positive.

For a redox reaction to be spontaneous, the electrode potential of the cell must be positive and this depends on the relative electrode potentials of the species involved in the reaction. A metal can not displace a metal above it in the electrochemical series from solution.

Based on this;

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Answer:

D. 1, 2, and 3

Explanation:

Answer:

The answer is A Tuberculosis