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Elena L [17]
3 years ago
11

Draw the isotopic notation for an element with 15 protons, 18 neutrons and 18 electrons

Chemistry
1 answer:
tatiyna3 years ago
5 0

Answer:

can't be done

Explanation:

protons and electrons always are the same number,and the neutrons are found by subtracting the atomic mass and protons/electrons soooooooo it can't have 15 protons, 18 electrons, and 18 neutrons.......i hope this helped if not please tell me.

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Please solve this thanks
MakcuM [25]

Answer:

A because ohc 3 stands for 1 that means one oxygen joint the h 6+6=12 so 1 oxygen and 12 hydrogen

6 0
3 years ago
Read 2 more answers
The balloon Spirit of Freedom, flown around the world by American Steve Fossett in 2002, contained 550,000 cubic feet of helium.
Elodia [21]
Assuming the balloon initially has volume of 0 when deflated, the total P(deltaV) = (1.00 atm)(550,000 ft^3) = 550,000 atm-ft^3. To convert into work units, we can first convert ft^3 to L:
(550,000 atm-ft^3)(1 m/3.28 ft)^3
= (15,586.2 atm-m^3)
Then we convert to L:
(15,586.2 atm-m^3)(1000 L/m^3)
= 15,586,200 atm-L
Then we convert to J:
(15,586,200 atm-L)(101.325 J / 1 atm-L)
= 1.579 x 10^9 J
3 0
3 years ago
What are some temperature change chemica reaction equations ?
Zinaida [17]

Answer:

The heating and melting of wax

Explanation:

When a candle is burned the wax heats up, but when cooled it hardens and cannot be put back into it original form.

Hope this helps

Please mark me as Brainliest

7 0
3 years ago
which wavelength of the band on the hydrogen emission line spectrum that has the most energy ? a. 410nm b.434nm c.486nm d.656nm
hammer [34]

Answer:  410 nm

Explanation: Energy of a photon is E = hf = hc/λ. The smaller wavelength λ, the greater energy

5 0
3 years ago
Calculate the mass of water if the densityis 1.02 g/mL and the volume is 62 ml. M = (D(V)
schepotkina [342]

Answer:

<h2>The answer is 63.24 g</h2>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

volume = 62 mL

density = 1.02 g/mL

The mass of the water is

mass = 1.02 × 62

We have the final answer as

<h3>63.24 g</h3>

Hope this helps you

7 0
3 years ago
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