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goldfiish [28.3K]
3 years ago
6

Select all characteristics that apply to

Chemistry
1 answer:
nikitadnepr [17]3 years ago
6 0

From the given, the characteristics that apply for solids are fixed volume, non-compressible, rigid, fixed shape.

<u>Explanation:</u>

Solids are one of the things where the molecules are tightly bonded and packed with strong forces so that the solids reach stable dimensions, stable shape and rigidity, and these are compressible because of strong bonds formed by the inadequate space between the molecules.

Solids are not compressible or easily compressible, because the molecular space between the molecules is too small.

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There are five objects (a pink object, a yellow object, a white object, a gray object, and a violet object). Each object has a d
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I- what is wrong with teachers???
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3 years ago
Most of an atom's volume is found:
Rus_ich [418]

Answer:

most of its mass is in the nucleus

Explanation:

the nucleus consists of protons and nutrons

8 0
3 years ago
The masses of four objects are given in this table. If all of the objects have the same acceleration, which will require the gre
worty [1.4K]

Answer:

Object 4 in the example

Explanation:

For simplicity and a clearer view of this problem, let's assume that four masses from 1 to 4 have the the masses 2 kg, 4 kg, 6 kg, 8 kg respectively.

According to the second Newton's law, we know that force is directly proportional to both mass and acceleration. The equation representing this is F = ma.

Notice that all of them have the same acceleration. This means, the greater the mass, the greater the force for a fixed acceleration. Simply speaking, the forces for each of the objects would be 2a, 4a, 6a and 8a respectively.

Since we're interested in the magnitude of the force and not direction, we neglect whether acceleration is positive or negative. This means that object 4 will require the greatest force to move, as it has the greatest mass.

3 0
3 years ago
In 1897 the Swedish explorer Andree tried to reach the North Pole in a balloon. The balloon was filled with hydrogen gas. The hy
vovangra [49]

Answer:

iron = 15000 kg 95% sulfuric acid = 27646.32 kg

Explanation:

The molar volume to a gas is 22.4 L, which means that a mole of a given gas at 0°C and 1 atm will have a volume os 22.4 L.

1 m3 - 1000 L

4870 m3 - x

x = 4870 * 1000 = 4.87 *10^6 L

1 mole - 22.4 L

y mole - 4.87 * 10^6 L

y = \frac{4.87 * 10^6}{22.4} = 2,17 *10^5 moles (if 100% of the H2 is used)

as 20% of it is lost, we need to know how much more we need to use.

80% - 2.17 * 10^5 moles

100% - z

z = \frac{2.17* 10^7}{80} = 2,68*10^5 moles

so we would need 2.68*10^5 moles of iron and sulfuric acid.

1 mole of iron - 56 *10^-3 kg

2.68*10^5 moles - t

t= 2.68*56 *10^2 = 15000 kg

1 mole of sulfuric acid - 98 * 10^-3 kg

2.68*10^5 - u

u = 2.68*98 *10^2 = 26264 kg (if 100%)

95% - 26264 kg

100% - v

v = \frac{26264 * 100}{95} = 27646.32 kg

6 0
3 years ago
Write the electron configuration for Br- and state the number of valence electrons. Select one:
Aleks04 [339]

Answer:

1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^62} 4s^{2} 3d^{10} 4p^{5} with 7 valence electrons.

Explanation:

Bromine has 7 unpaired (valence) electrons in its outer shell, and a total of 35 elecrons. Its <em>4s</em> orbital is completely filled with 2 electrons.

The closest answer from the options would be option D.

I hope this helps.

3 0
3 years ago
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