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2 years ago

Someone help me please

Chemistry

2 answers:

Alja [10]2 years ago

3 0

Answer:

1 - Biometric

2- Unique

3 - Skin cells

4 - The latent

5 - basal

6 - buckling

Explanation:

AleksAgata [21]2 years ago

3 0

1-biometric

Explanation:

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All of the following statements about different elements are true EXCEPT: Group of answer choices Krypton is one of the noble ga

seropon [69]

Sulfur is an element of the periodic table that is not considered a metalloid.

<h3>What is sulfur?</h3>

Sulfur is a chemical element of the periodic table that has the following characteristics:

Atomic number 16
S symbol
Sulfur is classified as a nonmetal
It has a yellow color

<h3>What are metalloids?</h3>

Metalloids are a set of chemical elements of the periodic table that are characterized by having an intermediate behavior between metals and non-metals, in terms of ionization energies and binding properties.

It is not easy to distinguish them from true metals. They conduct electrical current better than non-metals, but they are not good conductors like metals. In addition, they are usually very varied in their shape and coloration.

The list of metalloids includes the following elements:

Boron (B)
Silicon (Si)
Germanium (Ge)
Arsenic (As)
Antimony (Sb)
Tellurium (Te)
Polonium (Po)

Learn more about periodic table in: brainly.com/question/11155928

3 0

2 years ago

We can also perform a similar calculation for the mass defect and binding energy for nuclear reactions using the masses of the a

sukhopar [10]

Answer:

See Explanation

Explanation:

$\frac{235}{92} U + \frac{1}{0} n ---->\frac{137}{52} Te + \frac{97}{40} Zr +2\frac{1}{0} n$

Hence the mass defect is;

[235.04393 + 1.00867] - [ 136.92532 + 96.91095 + 2(1.00867)]

= 236.0526 - 235.85361

= 0.19899 amu

Since 1 amu = 1.66 * 10^-27 Kg

0.19899 amu = 0.19899 * 1.66 * 10^-27 = 3.3 * 10^-28 Kg

Binding energy = Δmc^2

Binding energy = 3.3 * 10^-28 Kg * (3 * 10^8)^2 = 2.97 * 10^-11 J

ii) $\frac{10}{5}B + \frac{1}{0}n-----> \frac{7}{3} Li + \frac{4}{2} He + Energy$

Hence the mass defect is;

[10.01294 + 1.00867] - [7.01600 + 4.00260]

= 11.02161 - 11.0186

= 0.00301 amu

Since 1 amu = 1.66 * 10^-27 Kg

0.00301 amu = 0.00301 * 1.66 * 10^-27 = 4.997 * 10^-30 Kg

Binding energy = Δmc^2

Binding energy = 4.997 * 10^-30 Kg * (3 * 10^8)^2 = 4.5 * 10^-13 J

7 0

3 years ago

Drag the tiles to the correct boxes. Not all tiles will be used.

NISA [10]

Answer:

1) Length - Meter

2) Mass - Pound

3) Time - Minute

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8 0

3 years ago

PLEASE HELP !!!!! PWEASEEEEE

Fantom [35]

Answer:

A option is correct

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5 0

2 years ago

A solution of ph 5 has _____ times more hydrogen ions than that of pure water.

Alik [6]

PH measures the concentration of hydrogen ions on the log 10 scale. Thus, a pH 5 solution has 2 order of magnitude difference from that of pure water, which has a pH of 7.

Therefore, $10^{2} = 100$ . A solution of pH 5 has 100 times more hydrogen ions that that of pure water.

3 0

3 years ago