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exis [7]
3 years ago
9

What is the answer miguel needs to use an electric hot plate to heat a beaker of water. as he starts to plug the hot plate into

the socket, he notices that the cord is frayed.what would be the best thing for miguel to do?
Chemistry
1 answer:
Oliga [24]3 years ago
7 0
Run away..............
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Hydrogen gas was collected by water displacement. what was pressure of the h2 collected if the temperature was 26°c?
Vedmedyk [2.9K]
The ideal gas law may be written as
p= \frac{\rho R T}{M}
where
p = pressure
ρ =density
T = temperature
M = molar mass
R = 8.314 J/(mol-K)

For the given problem,
ρ = 0.09 g/L = 0.09 kg/m³
T = 26°C = 26+273 K = 299 K
M = 1.008 g/mol = 1.008 x 10⁻³ kg/mol

Therefore
p= \frac{(0.09 \, kg/m^{3})*(8.314 \, J/(mol-K))*(299 \, K)}{1.008 \times 10^{-3} \, kg/mol} =2.2195 \times 10^{5} \, Pa

Note that 1 atm = 101325 Pa
Therefore
p = 2.2195 x 10⁵ Pa
   = 221.95 kPa 
   = (2.295 x 10⁵)/101325 atm
   = 2.19 atm

Answer:
2.2195 x 10⁵ Pa (or 221.95 kPa or 2.19 atm)

4 0
3 years ago
Which best describes nuclear fission?
rewona [7]

Answer:

C. The splitting apart of atomic nuclei

Explanation:

Nuclear fission is the splitting apart of atomic nuclei.

7 0
3 years ago
Of the well-characterized elements of group 7A, which would exhibit the following properties?
Nadusha1986 [10]

Answer: it reacts with the alkali metals (M) to form a salt MX, where X is the halogen.

Explanation: Group 7A elements are halogen and they react with alkali metals like Sodium or potassium to form a salt like NaCl

4 0
3 years ago
Match each root with its meaning. (5 points) 1. Grad/gress 2. Ject 3. Meter 4. Junct 5. Loc a. Place b. To throw c. Measure d. T
Dima020 [189]
1. To step
2. To throw
3. Measure
4. To join
5. Place
4 0
3 years ago
What is the correct name for SiCl5?
lyudmila [28]

Answer:

SbCl5

Antimony pentachloride

Antimony pentachloride is a chemical compound with the formula SbCl5.

- wikipedia

7 0
3 years ago
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