Nguyên tử của nguyên tố X có tổng số hạt 40. Tổng số hạt mang điện nhiều hơn số hạt không mang điện là 12 hạt.

A sample of 4.5 moles of an unknown gas occupies a volume of 1.6L at 23.2atm, what is the ideal temperature in oC for this sampl

Vsevolod [243]

Answer:

DWADADADA

Explanation:

DWADADADADADA

6 0

2 years ago

If 725 ml of N² gas is at 1 atm, what volume will it have at 1.4 atm?

alexdok [17]

Answer:

518 mL

Explanation:

We can solve this using Boyle's Law Formula

P1V1 = P2V2

where p1 = initial pressure, p2 = final pressure, v1 = initial volume and v2 = final volume

here , the initial pressure is 1 atm and the initial volume is 725mL

we are given the final pressure 1.4 and we need to find the final volume

so we have p1v1 = p2v2

==> plug in p1 = 1 , v1 = 725 mL and p2 = 1.4

(1)(725) = (1.4)v2

==> multiply 1 and 725

725 = (1.4)(v2)

==> divide both sides by 1.4

v2 = 518

N2 would have a volume of 518mL at 1.4atm

7 0

2 years ago

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A student attempted to identify an unknown compound by the method used in the experiment. She found that when she heated the sam

yanalaym [24]

Na2CO3 + 2Cl- ⇒ 2NaCl + CO3^-2

1 mole of Na2CO3 = 106 g 
2 moles of NaCl = 2 x 58.4
= 116.8 g
Na2CO3 would increase by 116.8 / 106 = 1.10 to form 2NaCl.
0.4862 g x 1.10 = 0.515 grams of NaCl.

K2CO3 + 2Cl- ⇒ 2KCl + CO3^-2
1 mole of K2CO3 = 138.2 g 
2 moles of KCl = 149.1 

K2CO3 would increase by 149.1 /138.2 = 1.079 to form 2KCl

 0.4862 x 1.079 = 0.5246 g

3 0

2 years ago

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Which describes the products created from fission reactions? Question 3 options:

Ipatiy [6.2K]

Answer: The correct answer is option A.

Explanation:

Nuclear fission reactions are a type of nuclear reactions in which larger nuclei breaks apart into two or more smaller fragment releasing alpha, gamma of beta particles.

There are 3 types of particles that can be released during this process:

1. Alpha particles: These particles are released when a nuclei undergoes alpha-decay process.

$_Z^A\textrm{X}\rightarrow _{Z-2}^{A-4}\textrm{Y}+_2^4\alpha$

2. Beta particles: These particles are released when a nuclei undergoes beta-minus decay process.

$_Z^A\textrm{X}\rightarrow _{Z+1}^{A}\textrm{Y}+_{-1}^0\beta$

3. Gamma radiations: these radiations are released when an unstable nuclei gives off excess energy by a process of spontaneous electromagnetic process.

$_Z^A\textrm{X}^*\rightarrow _Z^A\textrm{X}+_0^0\gamma$

Hence, any of these particles can be released during the process of fission reaction with smaller atoms.

Therefore, the correct answer is option A.

3 0

2 years ago

Can someone please help it is due tonight!

kompoz [17]

Reactants left products right

4 0

2 years ago

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