What kingdom is humans in!

Answers

Answer 1

Answer: It is in the Animalia kingdom.

Answer 2

Answer: We humans are apart of the animalia kingdom.

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The pigment which determines skin color is .

Which layer of the suns atmosphere appears red during an eclipse

Answers

The part of the Sun that we see during eclipse is the photosphere. The photosphere is scattered by the loose electrons in the corona’s plasma. A total solar eclipse is when the Moon appears to cover the entire solar disc. It lasts no more than 8 minutes.

The mass of an object is constant, but its weight may change depending on:

Answers

Answer:

gravity

Explanation:

your mass is the same on the moon as is on earth or underwater but your weight changes because of gravity

The process of breaking down of a chemical compound into its elements by chemical means is called: a) Analysis b) Synthesis c) Cracking d) None of the above

Answers

Answer:analysis

Explanation:

What are the effects of baking powder solution on dilute hydrochloric acid solution

Answers

Combining an acid with a base typically results in water and salt. In some cases, these reactions release gas and heat as well. Mixing baking soda, or NaHCO3, with hydrochloric acid, or HCl, results in table salt, NaCl, as well as water, H2O, and carbon dioxide, CO2.
:)

Compared to pure water, an aqueous solution of calcium chloride has a(1) higher boiling point and higher freezing point
(2) higher boiling point and lower freezing point
(3) lower boiling point and higher freezing point
(4) lower boiling point and lower freezing point

Answers

Answer: option (2) higher boiling point and lower freezing point.

Explanation:

Colligative properties are those properties of solution that depend on the concentraion of the solute.

Increase of boling point and depression of freezing point are two of those colligative properties.

Regarding the boiling point, as some impurities (in this case the solute calcium chloride) are present in the solvent (water) ,at the same temperature, less molecules of water will reach the surface to escape, at a given temperature. Hence, you have to increase the temperature to manage that the number of molecules and their speed increase and so all the molecules can escape fro, the liquid phase to form the gas. So, the boiling point of the water with the salt in it will be higher than the boiling point of pure water.

As for the freezing point, in a solution the particles of solute interfere with the attractive forces between the molecules of water avoiding that the solvent passes to solid state at the normal freezing point. Hence, the temperature to freeze will be lower.

Which formula represents lead(II) chromate?(1) PbCrO4 (3) Pb2CrO4
(2) Pb(CrO4)2 (4) Pb2(CrO4)3

Answers

The formula that represents Lead (II) Chromate is PbCrO4. It is a chemical compound with a strong yellow color.

Lead chromate and lead sulfate are found in the crystal Pb(Cr, S)O₄, which is a changeable solid mixed phase. This material is the end product of a co-precipitation reaction between lead and chrome salts (see the chapter on production and usage for further information). The correct option is 1.

Water does not dissolve lead chromate, which is produced by the double decomposition process. It is also used as a pigment and is referred to as chrome yellow. In a media that has been buffered with a solution of acetic acid and lead acetate, the lead precipitates as chrome.

There may be significant amounts of water-soluble lead compounds in lead chromate pigments. The formula that represents Lead (II) Chromate is PbCrO₄.

Thus the correct option is 1.

To know more about lead(II) chromate, visit;

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At 700 K the equilibrium constant KC for the reaction between NO(g) and O2(g) forming NO2(g) is 8.7 × 106. The rate constant for the reverse reaction at this temperature is 0.54 M–1s–1. What is the value of the rate constant for the forward reaction at 700 K?

How do you decide whether an observed property of matter is a physical or a chemical property?

Which of the following describes the Bohr atomic model?A. Protons, neutrons, and electrons orbit around each other in set paths.B. The nucleus contains protons and neutrons and is orbited by electrons.C. Protons, neutrons, and electrons occupy the same spaces within the atom.D. Protons occupy the center of an atom, with neutrons and electrons circling.