Below is a diagram showing a metal being heated. What name is given to particle Y?
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Answer:As we know that, one mole is equal to the one gram atom which is also equal to the molar mass. Therefore, the mass of 1.5 gram atom of calcium is 60 gram.

Explanation:

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The element which larger species in each pair are Sr ,N3-, Ni, S2-.

A chemical element is a species of atoms, including the pure substance made entirely of that species, that have a specific number of protons in their nuclei. Chemical elements, in contrast to chemical compounds, cannot be reduced by any chemical process into simpler molecules.

A substance made up of only one kind of atom, all of which have the same number of protons, is said to be an element. One famous illustration is pure gold. A ring constructed of pure gold would be composed of countless millions of atoms, each with the same atomic number and 79 protons in its nucleus.

The three categories of elements are metal, non-metal, and metalloid. Metals like sodium, calcium, caesium, and other elements on the extreme left of the periodic table are examples of this.

Thus, The element which larger species in each pair are Sr ,N3-, Ni, S2-.

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Answer:  

Graduated cylinder

Explanation:

A graduated cylinder is used routinely for measuring volume and is considered more accurate than a beaker because of the permanently-marked incremental graduations incorporated in the clear cylinder.

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Answer:

2Ca3(PO4)2 + 6SiO2 → P4O10 + 6CaSiO3.

Answer:

NICE

Explanation:

TOES

Answer:

 The answer is:

The first option

Explanation:

Answer:

chưa hiểu đáp ánkia cho lắm. Nhưng đáp án là ZnO nha

Explanation:

Answer:

A chemical property is a characteristic of a particular substance that can be observed in a chemical reaction. Some major chemical properties include flammability, toxicity, heat of combustion, pH value, rate of radioactive decay, and chemical stability.

Elements that belong to the same group of the periodic table (column) have similar properties. This is because elements of the same group have the same amount of valence electrons. This means that chemically and especially in a chemical reaction (or lack thereof), they will behave similarly.

Neon and Krypton are the only two gases in the list given that belong to the same group of the periodic table (Group 18 - Noble Gases) and as such have similar properties.

Similar Properties of Neon and Krypton:

Answer:

A:UNDERSTANDING CONCEPTS PART A 13) Which of the following is an example of periodicity? A) eating breakfast

Answer: 1900

Explanation:

I’m not sure but in 1900 98% of the moths were dark

Answer:

yes this is I think a true statement

Answer:

physical properties are examples of irreversibilities

and chemical properties are example of reverse abilities.

Answer:

B.

Explanation:

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Answer:

MIXTURE , ELEMENT AND SUBSTANCE

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Depending on the chemical, these longer-term health effects might include:

Answer:

The dark moths were now better camouflaged. As a result, dark moths had a greater chance of reproducing and passing on the alleles that made them dark. This led to a gradual increase in the proportion of dark moths until light moths became very rare in industrial areas. The moth populations in these areas had evolved.

The evolution of the peppered moth is an evolutionary instance of directional colour change in the moth population as a consequence of air pollution during the Industrial Revolution. The frequency of dark-coloured moths increased at that time, an example of industrial melanism.

Answer:

0.7 moles of Chlorine gas is required.

Explanation:

The reaction is balanced as follows:

2Na + [tex]Cl_{2}[/tex] ------>  2NaCl

According to stoichiometry,

2 mole Sodium reacts with 1 mole Chlorine gas

∴1 mole Sodium reacts with 1/2 moles of Chlorine gas

∴1.4 mole sodium reacts with 1.4/2 moles of Chlorine gas

                                                = 0.7 moles of Chlorine gas

So, 0.7 moles of Chlorine gas is required.

Answer:

evaporate

Explanation:

after water or any other solvent has mixed with satt stirr the mixture then heat it the water will evaporate leaving the solute (salt) behind

Answer:

i’m sorry i don’t know

Explanation:

Answer:

protons=15

electron=15

neutron=16

Answer: liquid boiling is a reversable chemical change.

Explanation: you can alter the temperature to prevent it from boiling

Answer: 1.45M

Explanation:

The definition of molarity is moles/liter.  The neutralization of NaOH with HI is:

HI + NaOH = NaI  + H2O

One mole of HI reacts with 1 mole of NaOH.  We'll assume this is a titration reaction and that the 10.00ml sample of NaOH contains the same number of moles as the 56.75ml of 0.256M HI.

Moles HI:  (0.256 moles/liter)*(0.05675 L) = 0.01453 moles HI

That means we muct have 0.01453 moles NaOH in 10.0ml of NaOH solution.

(0.01453 moles NaOH)/(0.010L) = 1.45 M

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Another approach is to use the relationship M1V1 = M2V2, which is useful for titrations (M is concentration and V is volume):

We want M2, so rearrange:  M2 = M1V1/V2

M2 = (0.256M)*(56.75ml)/(10.0ml)

M2 = 1.45M

Answer:

Neutralization reaction is a type of chemical reaction in which an acid and a base react together to form a salt and water as product.

Explanation:

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Answer:

m

Explanation: