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3 years ago

7

Helppp me pleasee I will marks you as brainliest if it's correct

2 answers:

Shtirlitz [24]3 years ago

8 0

The answer is A
trust me i know

tangare [24]3 years ago

7 0

A.)

They can change suddenly, such as after a storm, or they can change slowly, such as when high tides erode a shoreline cliff.

You might be interested in

A straight chain hydrocarbon with the formula C^3H^4 _____.

Yakvenalex [24]

Answer:

has two double C-C bonds

Explanation:

A saturated compound is a compound having the full complement of hydrogen atoms for every carbon atom while an unsaturated compound does not contain the full complement of hydrogen atoms for every atom of carbon.

If we look at C3H4, the only possible structure of the compound is H2C=C=CH2. We can see from this arrangement that the compound contains a cumulative double bond. This is the specific structure that fits into one of the descriptions in the options, the compound contains two double bonds.

4 0

3 years ago

Will give brainliest

Vinvika [58]

Answer:

I think its C

Explanation:

it's not A or B

hope this helps

6 0

3 years ago

calculate atomic weight of silver which has two isotopes with the following properties : silver-107 (106.91 amu, 51.84% natural

Julli [10]

Answer: The atomic weight of silver is 107.87 amu

Explanation:

Mass of isotope silver-107 = 106.91 amu

% abundance of isotope silver -107 = 51.84% = $\frac{51.84}{100}=0.5184$

Mass of isotope silver-109 = 108.90 amu

% abundance of isotope silver-109 = 48.16% = $\frac{48.16}{100}=0.4816$

Formula used for average atomic mass of an element :

$\text{ Average atomic mass of an element}=\sum(\text{atomic mass of an isotopes}\times {{\text { fractional abundance}})$

$A=\sum[(106.91\times 0.5184)+(108.90\times 0.4816)]$

$A=107.87amu$

Thus atomic weight of silver is 107.87 amu

8 0

4 years ago

What is neutron number for calcium

notka56 [123]

Answer:

20 neutrons

Explanation:

(not really any just look at a periodic table)

5 0

3 years ago

how many liters of radon gas would be in 3.43 moles at standard temperature and pressure (273K and 100 kPa)?

bagirrra123 [75]

Answer:

V = 0.0007678398L

Explanation:

Given parameters:

Number of moles of gas = 3.43moles

Temperature = 273k

pressure = 100kPa = 100000Pa

Unknown:

Volume of gas = ?

Solution

The gas is at standard temperature and pressure, this implies we can use the ideal gas equation to solve for the unknown.

Mathematically, the law is expressed as:

PV = nRT

The unknown here is the Volume, V. We know the other parameters.

P = pressure on the gas

n = number of moles

R = gas constant=0.082

T = temperature

now, we have to make V the subject of the expression:

V = $\frac{nRT}{P}$

V = $\frac{3.43 x 0.082 x 273}{100000}$

V = 0.0007678398L

8 0

3 years ago