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maksim [4K]
3 years ago
10

A chemist performs the same tests on two homogeneous white crystalline solids, A and B. The results are shown in the table below

. Solid A Solid B Appearance and Texture Crystalline Crystalling and Powdery Solubility in Water g per 100 mL H2O at 0 0C 35.7 10.5 Conductivity (Yes/No) Good Conductor Okay Conductor The results of these test suggest that: both solids only contain ionic bonds both solids only contain Covalent bonds Solid A contains only Ionic bonds and solid B only contains Covalent bonds Solid A contains only Covalent bonds and solid B contains only Ionic bonds One Solid contains only one type of bond and the other contains both types of bonds Defend your answer:
Chemistry
1 answer:
Nookie1986 [14]3 years ago
7 0

Solid A contains only Covalent bonds and solid B only contains Ionic bonds. I know this because the appearance, solubility, and conductivity of solid A describes Covalent bonds.

Explanation:

Try this, but idk if it will be marked as correct.

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How did scientists find out about atoms before technology?
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Answer:

There are three ways that scientists have proved that these sub-atomic particles exist. They are direct observation, indirect observation or inferred presence and predictions from theory or conjecture. Scientists in the 1800's were able to infer a lot about the sub-atomic world from chemistry.

Explanation:

Hope this helps

6 0
3 years ago
What is the difference between a transition metal and an f-element?
gtnhenbr [62]

Answer:  The transition elements are in the d-block, and in the d-orbital have valence electrons. They can form several states of oxidation and contain different ions. Inner transition elements are in the f-block, and in the f-orbital have valence electrons.

Explanation:

6 0
2 years ago
What force is necessary to accelerates a 1250kg car at a rate of 40 m/s
zalisa [80]

Answer:

F = 50000 N

Explanation:

The acceleration is rate of change of velocity of an object with respect to time.

Formula:

a = Δv/Δt

a = acceleration

Δv = change in velocity

Δt = change in time

Units:

The unit of acceleration is m.s⁻².

Acceleration can also be determine through following formula,

F = m × a

a = F/m

Given data:

Mass of car = 1250 Kg

Acceleration = 40 m/s².

Force = ?

Solution:

F = m × a

F = 1250 Kg ×  40 m/s²

Kg.m/s² = N

F = 50000 N

8 0
3 years ago
Which pair of ions can form an ionic bond with each other and why? A.Cu and Ag; They are both metal ions.B. S and O; They have l
kap26 [50]
Opposite pairs form ionic bonds, due to this the answer is D - Li and Br; They have unlike charges.
5 0
3 years ago
Read 2 more answers
It is required to prepare 1250 kg of a solution composed of 12 wt.% ethanol and 88 wt.% water. Two solutions are available, the
bekas [8.4K]

Answer:

437.5 kg of first solution and 812.5 kg of second solution should be mixed to get desired solution.

Explanation:

Let the mass of the first solution be x and second solution be y.

Amount solution required = 1250 kg

x + y = 1250 kg....[1]

Percentage of ethanol in required solution = 12% of 1250 kg

Percentage of ethanol in solution-1 = 5% of x

Percentage of ethanol in required solution = 25% of y

5% of x +  25% of y =12% of 1250 kg

\frac{5}{100}\times x+\frac{25}{100}y=\frac{12}{100}\times 1250 kg

x + 5y = 3000 kg...[2]

Solving [1] and [2] we :

x = 437.5 kg   , y =  812.5 kg

437.5 kg of first solution and 812.5 kg of second solution should be mixed to get desired solution.

8 0
3 years ago
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