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Pachacha [2.7K]
2 years ago
5

explain what you would do expect caesium astatide to look like .will it be soluble in water ?explain your reasoning​

Chemistry
1 answer:
son4ous [18]2 years ago
3 0

Answer:

it will not be soluble in water Becoz it can only be

separated by passing it through silver nitrate solution

Explanation:

i hope you understand

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Which of the following statements is true about the relationships between photon energy, wavelength, and frequency?
iris [78.8K]

Answer: The Answer is A.

Explanation:

The amount of energy is directly proportional to the photon's electromagnetic frequency and thus, equivalently, is inversely proportional to the wavelength. The higher the photon's frequency, the higher its energy. Equivalently, the longer the photon's wavelength, the lower its energy.

Hope this Helps!

8 0
2 years ago
All amino acids that are found in proteins, except for proline, contain a(n); Group of answer choices amino group carbonyl group
Jobisdone [24]

Answer:

amino group

Explanation:

There are twenty (20) amino acids in nature. Generally, each amino acid is structurally made up of a central carbon atom called alpha carbon attached to a hydrogen, carboxylic acid group (-COOH) and an amine group (-NH2). However, one particular amino acid called PROLINE posseses an exception to this.

Proline, which is the only cyclic amino acid, is also the only amino acid that forms a secondary amine group i.e. loss of hydrogen atoms in its amine group when in a protein structure. This means that when in a protein, PROLINE does not have an AMINE GROUP.

7 0
2 years ago
A gram of gasoline produces 45.0kJ of energy when burned. Gasoline has a density of 0.77/gmL. How would you calculate the amount
Ber [7]

Answer:

Math expression: =\frac{0.77\ g/ml*5200\ ml}{1\ g} *45.0\ kJ

Explanation:

<u>Given:</u>

Energy produced per gram of gasoline = 45.0 kJ

Density of gasoline = 0.77 g/ml

Volume of gasoline = 5.2  L=5200 ml

<u>To determine:</u>

The amount of energy produced by burning 5.2 L gasoline

<u>Calculation set-up:</u>

1. Calculate the mass (m) of gasoline given the density (d) and volume (v)

m = d*v\\\\m = 0.77 g/ml*5200 ml

2. Calculate the amount of energy produced

=\frac{0.77\ g/ml*5200\ ml}{1\ g} *45.0\ kJ=180180 kJ

7 0
2 years ago
An unknown element X has the following isotopes: ²⁵X (80.5% abundant) and ²⁷X (19.5% abundant). What is the average atomic mass
IgorC [24]

Answer:

25.39

Explanation:

Given parameters:

Abundance of X-25  = 80.5%

Abundance of X - 27  = 19.5%

Unknown:

Average atomic mass of X  = ?

Solution:

The average atomic mass of X can be derived using the expression below:

Average atomic mass = (abundance x mass of X - 25) + (abundance x mass of X - 27)

Average atomic mass  =  (80.5%  x 25) +   (19.5% x 27)  = 25.39

5 0
2 years ago
If the standard solutions had unknowingly been made up to be 0.0024 m agno3 and 0.0040 m k2cro4, would this have affected your r
Mnenie [13.5K]
2AgNO3+K2CrO4⇒Ag2CrO4(s)+2KNO3
Hence by mixing 0.0024M AgNO3 and 0.004M
K2CrO4, we will have Ag2CrO4 which is precipitated out and leave us with 
0.0024M KN03 which is mixed with (0.004-0.0024/2)M, it can be 0.0028M, of K2Cr04
6 0
2 years ago
Read 2 more answers
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