Do all substances have the same melting point and boiling point as water?? (i think this can be answered from the particle theory!!)

Answers

Answer 1

Answer: They cannot, because then at room temperature metals would not be solid. THey would be in a liquid state.

Related Questions

Which statement best describes the effect of low ionization energies and low electronegativities on metallic bonding? a. The valence electrons are easily delocalized. b. The valence electrons stay in a single orbital. c. The valence electrons break free of the crystals. d. The valence electrons move closer to the nuclei.
Predict what kind of energy process happens when Lye, NaOH(s) is put in water and the water gets hot
1. A sample of nitrogen occupies a volume of 250 mLat 298 K. What volume will it occupy at 268 K?
Which contains more molecules: 1.00 mol H2O2, 1.00 mol C2H6, or 1.00 mol CO?
Alchemy is a branch of ancient knowledge that states lead metal is a form of gold metal. Which of these best explains whether alchemy is a science or pseudoscience? It is a science because ancient knowledge is often reliable. It is a science because metallurgy is known to be a branch of science. It is pseudoscience because ancient knowledge is mystical yet reliable. It is pseudoscience because each metal is known to be a unique element.

How many moles of sulfate ions (SO42−) are present in 1.5 mol of Al2(SO4)3?

Answers

Answer:4.5 moles of sulfate ions are present in 1.5 moles of $Al_2(SO_4)_3$ .

Explanation:

$Al_2(SO_4)_3\rightarrow 2Al^(3+)+3SO_(4)^(2-)$

1 mol of $Al_2(SO_4)_3$ gives 3 moles of sulfate ions.

Moles of sulfate ion in 1.5 moles : $1.5* 3=4.5 moles$

4.5 moles of sulfate ions are present in 1.5 moles of $Al_2(SO_4)_3$ .

Moles are the fraction of the chemical unit of the atoms, molecules, etc. The moles of sulfate ion present in 1.5 moles of aluminum sulfate is 4.5 moles.

What are moles?

Moles are the ratio of the mass of the substance to that of the molar mass of the substance. Moles are given in mol.

The reaction can be shown as:

$\rm Al_(2)(SO_(4))_(3) \rightarrow 2Al^(3+) + 3SO_(4)^(2-)$

From the reaction, it can be concluded that 1 mole of aluminum sulfate will give 3 moles of sulfate ions.

The moles of sulfate ions in 1.5 moles of aluminum sulfate will be, $1.5 * 3 = 4.5 \;\rm moles.$

Therefore, 4.5 moles of sulfate ions are present in aluminum sulfate.

Learn more about moles here:

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How many grams of lithium nitrate will be needed to make 250 grams of lithium sulfate

Answers

313.03, since every molecule of lithium nitrate produces 1 lithium, where lithium sulfate consumes double, then you find that the moles of lithium sulfate are 2.27 (mass/molar mass), then multiply that by 2 (for the discrepancy in the molecule consumption/production) and then multiply that by the molar mass of lithium nitrate to find the mass of lithium nitrate needed. Hope that helped.

A computed tomography (CT) scan fires radiation through the body to create an image. What type of radiation does a CT scan use?

Answers

A computed tomography (CT) scan fires radiation through the body to create an image. A CT scan uses x-rays radiation which are form of an ionizing radiation.

What is ionizing radiation?

The radiation which have enough energy to cause ionization by passing through that medium is called ionizing radiation. The ionizing radiation are x-rays and gamma rays.

To learn more about x-rays here.

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#SPJ2

Answer:

Gamma Radiation

Explanation:

Got It Right On Edge

if 1200 j of heat were absorbed by a 25 g block of iron, by how much would the temperature of the iron increase?

Answers

m = mass of the block of iron = 25 g

Q = heat absorbed by the block of iron = 1200 J

ΔT = increase in the temperature of iron due to heat absorbed = ?

c = specific heat of block of iron = 0.450 J/(g C)

Heat absorbed by the block of iron is given as

Q = m c ΔT

inserting the values in the above formula

1200 = 25 (0.450) ΔT

1200 = (11.25) ΔT

ΔT = 1200/11.25

ΔT = 106.67 C

One positive attribute of dietary fat is that it's a good source of A. water.
B. vitamin
c.
C. energy.
D. boron.

Answers

C. energy.

One positive attribute of dietary fat is that it's a good source of ENERGY

NOT:
A. water.
B. vitamin
D. boron.

One positive attribute of dietary fat is that it's a good source of C. energy.

50 POINTS Match each item with the correct statement below:

1.) The fact that matter can be neither created nor destroyed in a chemical change.
2.) Substance that changes to a gas easily at room temperature.
3.) Any chemical reaction that absorbs energy.
4.) Can be observed only when there is a change in composition of a substance.
5.) Any chemical reaction that gives off energy.
6.) The amount of matter contained in a unit of volume.
7.) The type of change in which the identity of substances does not change.
8.) The change of one or more substances into other substances.
9.) Can be observed without any change in the identity of the substance.
10.) Another term for chemical change.

chemical property
physical change
physical property
chemical change
density
law of conservation of mass
chemical reaction
volatile
endothermic
exothermic
energy

Answers

Answer:

1) law of conservation of mass

2) volatile

3) endothermic

4) chemical property

5) exothermic

6) density

7) physical change

8) chemical change

9) physical property

10) chemical reaction

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