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Ratling [72]
3 years ago
15

Calculate the relative molecular mass of C2H2O42H2O​

Chemistry
1 answer:
Alexus [3.1K]3 years ago
8 0

Answer:

CaSO4 2H20

Explanation:

if you look it up you would see the same answer on a website

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As a science major, you are assigned to the "Atomic Dorm" at college. The first floor has one suite with one bedroom that has a
lidiya [134]

Explanation:

A.

The first student will be on the lower bunk on the first floor because 1. They want on the lowest available floor and 2. They want to be in a lower bunk if available.

B.

7 students are in the TOP bunks because 1. They want on the lowest available floor and 2. They want to be in a lower bunk if available. Therefore, all the rooms up till the third floor (Remember, third floor has 3 suites), so the first floor is filled - 1 person on the top bunk, 2 floor is filled- 4 persons and the third floor; the first suite is filled - 1 person and the second suite is a little partially filled- 1 person.

C.

Following the criteria 1, 2 and 3, the 21st student occupies the third suite on the third floor because all the floors (1 and 2) are occupied so the third suite on the third floor is still vacant.

D.

From the criteria there are therefore 10 persons at the TOP bunk. All the rooms up till the third floor are filled, so the first floor is filled - 1 person on the top bunk, second floor is filled (2 suites) - 4 persons and the third floor; the first suite and second suite is filled - 4 persons; the thirs suite has 6 persons present so 1 person is at the top bunk.

8 0
3 years ago
What causes the properties of elements in a group to be similar?
77julia77 [94]
They have similar properties because they have the same number of valence electrons
8 0
3 years ago
2 planets are over 4 million light years away. Explain how you would use a ray of light to determine which planet is farther awa
grigory [225]
Https://earthsky.org/space/what-is-a-light-year
4 0
3 years ago
Read 2 more answers
The weight of an object is the product of its mass, m, and the acceleration of gravity, g (where g=9.8 m/s2). If an object’s mas
Murljashka [212]
Weight=mass×g=10×9.8=98N
<span>hope it helped :-)</span>
6 0
3 years ago
A sample of gas contains 3.0L of nitrogen at 320kPa. What volume would be necessary to decrease the pressure at 110kPa
Phoenix [80]

Answer:

V_{2} = 8.92 L

Explanation:

We have the equation for ideal gas expressed as:

PV=nRT

Being:

P = Pressure

V = Volume

n = molar number

R = Universal gas constant

T = Temperature

From the statement of the problem I infer that we are looking to change the volume and the pressure, maintaining the temperature, so I can calculate the right side of the equation with the data of the initial condition of the gas:

P_{1} V_{1} =nRT

320Kpa*0.003m^{3} =nRT

1000L = 1m^{3}

So

nRT= 0.96

Now, as for the final condition:

P_{2}V_{2}=nRT

P_{2} V_{2} =0.96

clearingV_{2}

V_{2} =\frac{0.96}{P_{2} }

V_{2} =0.00872m_{3}

V_{2} = 8.92 L

6 0
3 years ago
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