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.
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B) The number of molecules decreases.
C) The temperature decreases.
D) The volume decreases.
Answer:
D)
Explanation:
The volume decreases.
Answer:
Zinc doesn't react with water.
Explanation:
It forms a layer of insoluble zinc hydroxide.
Hydrogen is being oxidized in the given reaction CO2 + H2 → CO + H2O. the carbon atom in CO2 is reduced to CO, while the hydrogen atoms in H2 are oxidized to H2O.
Oxidation is the loss of electrons, while reduction is the gain of electrons. To determine which class is being oxidized and that is being diminished, we can equate the oxidation states of the materials in the reactants and produce.
In CO2, the element atom has an oxidation state of +4, while the oxygen atoms each have an disintegration state of -2. In H2, each hydrogen atom has an decay state of 0.
In CO, the element atom has an oxidation state of +2, while the oxygen dot in H2O has an oxidation state of -2. The hydrogen atoms in H2O each have an disintegration state of +1.
Therefore, the carbon atom in CO2 is decreased to CO, while the hydrogen atoms in H2 are oxidized to H2O.
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Power is not a vector quantity in the provided query. The correct answer is option c.
A vector quantity is a physical quantity with magnitude as well as direction. Displacement, velocity, acceleration, and force are the types of vector quantities.
In contrast, power is a scalar quantity, which means it has simply magnitude and no direction. Power is measured in watts (W) or joules per second (J/s) and is defined as the rate at which work is done or energy is moved.
Therefore, the physical quantity that is not a vector quantity is option c, power.
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The given question is incomplete. The complete question is:
Which of the following is not a vector quantity? Select one:
a. acceleration
b. displacement
c. power
d. velocity.
Answer:
Explanation:
If you are asking which state of matter is more dense of which, then this is the order.
- Liquid is more dense than Gas
- Solid is more dense than Liquid
- Gas is less dense than Air
Just to let you know, Solid is the most dense of them all, making Gas the least dense of the three.
Hope this helps! ^^
solids have more dens than any type of matter and I am sure btw