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larisa86 [58]
2 years ago
5

5 meters

Chemistry
1 answer:
Feliz [49]2 years ago
7 0

Answer:

9

Explanation:

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Chemistry, need answer ASAP!! 50 points and i'll mark brainliest if correct! ^w^
pishuonlain [190]

Answer:

615 g

Explanation:

In order to convert from moles of any given substance into grams, we have to use said substance's <em>molar mass</em>, as follows:

  • # moles * Molar mass = grams of substance.

Thus, we now <u>calculate the molar mass of beryllium iodide</u>, BeI₂, using the <em>molar masses of the elements</em>:

  • Molar Mass of BeI₂ = Molar Mass of Be + (Molar Mass of I)*2 = 262.821 g/mol

Finally we <u>calculate how many grams are there in 2.34 moles of BeI₂</u>:

  • 2.34 mol * 262.821 g/mol = 615 g
4 0
2 years ago
The solubility of CaSO4 in pure water at 0oC is 1.09 gram(s) per liter. The value of the solubility product is g
malfutka [58]

Answer: See image attached!

Good luck with your future exams!

7 0
3 years ago
A student increases the temperature of a 673 cm^3 balloon from 275 K to 460 K.
Kruka [31]

Answer:

1125.75 cm³

Explanation:

We are given;

Initial volume; V1 = 673 cm³

Initial temperature; T1 = 275 K

Final temperature; T2 = 460 K

From Charles law, we can find the new volume from;

V1/T1 = V2/T2

V2 = (V1 × T2)/T1

V2 = (673 × 460)/275

V2 = 1125.75 cm³

8 0
2 years ago
If you have 5.42 x 1024 aluminum atoms, approximately how many moles is that
sattari [20]

Answer:

<h2>9.00 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{5.42 \times  {10}^{24} }{6.02 \times {10}^{23} }  \\  = 9.0033

We have the final answer as

<h3>9.00 moles</h3>

Hope this helps you

4 0
3 years ago
A car is traveling at 15kph and speeds up to 30kph in 5 seconds. What is its acceleration?
Wewaii [24]

Answer:

the acceleration is 3 k/h/s

Explanation:

The formula for acceleration is Δv/t, so change in velocity divided by time.

The original velocity is 15 kph, and the final velocity is 30 kph. Therefore, the change in velocity is 15 kph. 15/5=3 k/h/s

3 0
2 years ago
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