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spayn [35]
3 years ago
12

How many neutrons does element X have if its atomic number is 25 and its mass number is 85?

Mathematics
2 answers:
Lynna [10]3 years ago
5 0

Neutrons= Atomic Mass Number- Atomic Mass Number

So 85-25= 60

Natalija [7]3 years ago
3 0

<u>Answer:</u>

60 neutrons

<u>Step-by-step explanation:</u>

We are given that the atomic number of an element X is 25 and its mass number is 85 and we are find the number of neutrons this element has.

We will use the following formula to find the number of neutrons:

<em>Neutrons = Atomic mass number - Atomic number</em>

So substituting the given values in the above formula to get:

Number of neutron = 85 - 25 = 60

Therefore, element X has 60 neutrons.

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What type of data would weather be measured in a month?
Tju [1.3M]

Answer:

Weather data includes any facts or numbers about the state of the atmosphere, including temperature, wind speed, rain or snow, humidity, and pressure. These days, we have some amazing ways to collect this kind of data. We have high-tech equipment that can measure everything with amazing accuracy.

7 0
3 years ago
A speed walker covered 4 1/2 mi in 3/4 hour. How far will he walk in 3/4 hour if he walks
Pavel [41]

Answer:

A=27/4       B=2.25

Step-by-step explanation:

4 and 1/2 also equals 18/4.

18/4+1/2(18/4)=18/4+9/4

18+9=27

Answer is 27/4

B)=4.5/2=2.25

4 0
3 years ago
You deposit $975.52 in a bank account. Find the balance after 4 years if the account pays 7.25% annual interest compounded quart
sladkih [1.3K]

Answer:

The final ballance will be $1300.37.

Step-by-step explanation:

In this case we have a compounded interest, in order to calculate the final balance we need to use the following formula:

S = P(1 + r/n)^(n*t)

Where S is the final balance, P is the initial investment, r is the rate of interest, t is the time and n is the rate at which it is compounded. Since we have all the values we can directly apply to the formula as follows:

S = 975.52*(1 + 0.0725/4)^(4*4)

S = 975.52*(1.018125)^(16)

S = 975.52*1.333

S = 1300.37

The final ballance will be $1300.37.

4 0
3 years ago
PLEASE HELP ME!!! Which inequality best represents that ice cream at -5 degrees celsius is cooler than 4 degrees celsius? A. -4
otez555 [7]

Answer:

i think but I am not sure so maybe ask somebody else but I think it is A.

Step-by-step explanation:

I just think it is

8 0
3 years ago
How do you solve this?
masha68 [24]
Here's what i found online:

<span>a/3+4=6

We simplify the equation to the form, which is simple to understand
<span>a/3+4=6

Simplifying:
<span> + 0.333333333333a+4=6

We move all terms containing a to the left and all other terms to the right.
<span> + 0.333333333333a=+6-4

We simplify left and right side of the equation.
<span> + 0.333333333333a=+2

We divide both sides of the equation by 0.333333333333 to get a.
<span>a=6

Hope this helped :-)</span></span></span></span></span></span>
4 0
3 years ago
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