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bezimeni [28]
2 years ago
15

Which statement best describes the properties of ionic compounds? They are brittle, solid at room temperature, and have a high m

elting point. They are always composed of an equal proportion of cations to anions. They mostly have low melting and boiling points. They are good conductors of heat and electricity and are ductile and malleable.
Chemistry
2 answers:
NARA [144]2 years ago
6 0
<span>Most properties of ionic compounds are based on the strength of the ionic bonds. Ionic bonds are the strongest bonds between atoms (compared with covalent bonds), so that implies that the ionic compounds will be solid and form crystals at room temperature, will have high melting and boiling points, will be hard, rigid and brittle, will dissolve into ions (cations and anions) in polar solvents, and their solutions will conduct electricity.</span>
Cloud [144]2 years ago
3 0
They are brittle, solid at room temperature, and have s high melting point
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The answer please thank you
otez555 [7]

Answer:

B

Explanation:

5 0
3 years ago
Answer the question below based on the periodic table entry for bromine.
Shalnov [3]
<span>The number of neutrons bromine will have are equal to
= protons + neutrons
so,
80-35=45</span>
4 0
3 years ago
Read 2 more answers
How many grams of CH4 will be in a 500ml contain at STP?
ArbitrLikvidat [17]

Answer:

Mass = 0.32 g

Explanation:

Given data:

Mass of CH₄ = ?

Volume of CH₄ = 500 mL (500 mL× 1L/1000 mL= 0.5 L)

Temperature = 273 K

Pressure = 1 atm

Solution:

Volume of CH₄:

500 mL (500 mL× 1L/1000 mL= 0.5 L)

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

By putting values,

1 atm× 0.5 L = n×0.0821 atm.L/ mol.K  × 273 K

0.5 atm.L = n×22.4 atm.L/ mol

n = 0.5 atm.L / 22.4 atm.L/ mol

n = 0.02 mol

Mass in gram:

Mass = number of moles × molar mass

Mass = 0.02 mol × 16 g/mol

Mass = 0.32 g

7 0
3 years ago
Describe how Newton’s third law applies in a sports game. You choose the sport!
Fudgin [204]

Answer: When you strike a tennis ball with a racket, the slight springyness of the racket allows the ball to propel forward

Explanation:

6 0
2 years ago
Read 2 more answers
A sample of N2(g) was collected over water at 25°C and 730 torr in a container with a volume of 340 mL. The vapor pressure of wa
AnnZ [28]

Answer:

D. 0.36 g

Explanation:

When a gas is collected over water, the total pressure is the sum of the pressure of the gas and the pressure of the water vapor.

Ptotal = Pwater + PN₂

PN₂ = Ptotal - Pwater = 730 torr - 23.76 torr = 706 torr

We can find the mass of N₂ using the ideal gas equation.

P.V=n.R.T=\frac{m}{M} .R.T\\m=\frac{P.V.M}{R.T} =\frac{730torr.0.340L.28g/mol}{(0.08206atm.L/mol.K).298K} .\frac{1atm}{760torr} =0.36g

6 0
2 years ago
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