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3 years ago

How is the mass number calculated for an element

2 answers:

7 0

The mass number of an element is equivalent to the number of Protons and Neutrons in the element. For example Oxygen has eight protons and neutrons, therefore its mass number is 16. You could also calculate this by simply rounding the atomic weight of the element to the nearest whole number. Oxygen's atomic weight is 15.994, which as you can see, would be rounded to 16 :)

Schach [20]3 years ago

5 0

The mass number of an element is equivalent to the number of Protons and Neutrons in the element.

You might be interested in

What indian leader worked in the 201th century to free india from british control

zalisa [80]

The answer is Mahatma Gandhi. He used non-violent methods to revolt against the British.

Hope this helps :)

4 0

3 years ago

Explain the seasonal precipitation pattern in bangkok in terms of pressure and wind systems. what causes the summer rains? what

marysya [2.9K]

Bangkok, the capital of the Southeast Asian country of Thailand, is influenced by the monsoons, and they are the dominant climatic factor in this region and gives it its climatic patters.

There's two seasons, a wet one, and a dry one. The wet season is characterized by heavy rainfall for a prolonged period of time, and those rains are brought by the wet and warm monsoons coming from east. The dry season is characterized by prolonged period of time that is warm and dry, and that is caused by the dry monsoon winds coming from the west.

During the wet season, the air pressure is higher because the rain increases the weight of the air.

During the dry season, the air pressure is lower because of the high evaporation, and the water vapor is lighter than the air itself, thus causing the air to weigh less.

3 0

3 years ago

Which of the following is a way for a state to achieve international sovereignty?

docker41 [41]

Answer:T

he answer is C

Let's go through the options:

a. declare sovereignty in a document, such as the Declaration of Independence

-this is a good start, but it's not enough, a number of states have declared sovereignty but they were not recognized internationally.

b. pass a law requiring other states to recognize its sovereignty

- a state can't pass a law about what the others should do: this is a false answer

c. gain recognition of sovereignty from the United Nations

-this is the best way of achieving sovereignty in a way that is recognized internationally - this is the best answer.

d. merge with another state and form a new state

-this is not the right answer - this state would not be sovereign then.

Explanation:

4 0

3 years ago

Read 2 more answers

ALGEBRA:Chase rides his bike 5 miles to school in 25 minutes. The relationship between the distance he rides and the time it tak

bezimeni [28]

(D) Distance traveled by Chase on bike = 5 miles

(T) Time taken by Chase to travel that distance = 25 minutes

D and T are directly related.

Part A (Equation)

Since, D and T are directly related,

⇒ D ∝ T (i.e. D is directly proportion to T)

⇒ D = k × T (using k as constant variation, as suggested in the question)

So the equation that represents the relation between T and D is D = k × T.

Part B (Value and units for k)

When we put the values of T and D in the equation D = k × T, we get:

5 = k × 25

Solving the above equation and moving 25 to the Left Hand Side (LHS) of the equation

⇒ 5 ÷ 25 = k

⇒ 0.2 = k OR

⇒ k = 0.2

Hence, value of k is 0.2. This is the rate at which Chase drove his bike to school.

Now, to determine the unit of k we will simply put the units of D and T in the equation.

⇒ 5 miles = k × 25 minutes

⇒ 0.2 miles/minute = k OR

⇒ k = 0.2 miles/minute

Hence, the unit for k is miles/minute or miles per minute.

Part C (Time taken to ride 8 miles)

Now, if Chase drives his bike at the same rate every day, i.e. at 0.2 miles/minute, then we need to determine how much time he takes to ride 8 miles. Putting the values of k and D in the equation:

⇒ 8 = 0.2 × T

⇒ T = 40 minutes

So, Chase would take 40 minutes to cover a distance of 8 miles.

7 0

3 years ago

True or false arabia lies on a peninsula, which means that it is surrounded by water on three sides.

kkurt [141]

Yes the area in which Saudi Arabia is, is a peninsula because it is surrounded by the persian gulf, Red Sea and the Indian Ocean

6 0

3 years ago