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Naily [24]
4 years ago
14

This is simple I am just confused

Chemistry
1 answer:
SOVA2 [1]4 years ago
8 0

Answer:

They all have the same number of protons but different numbers of neutrons.

Explanation:

Elements will always have the same number of protons no matter the isotopes. Isotopes only change the number of neutrons. Silicon will always have 14 protons. So silicon-28 has 14 protons and 14 neutrons. Silicon-29 has 14 protons and 15 neutrons. Silicon-30 has 14 protons and 16 neutrons.

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If a balloon containing 3000 L of gas at 39°C and 99 kPa rises to an altitude where the pressure is 45.5 kPa and the temperature
ludmilkaskok [199]

\tt =3000~L\times \dfrac{289}{312}\times \dfrac{99}{45.5}

<h3>Further explanation</h3>

Given

3000 L of gas at 39°C and 99 kPa to 45.5 kPa and 16°C,

Required

the new volume

Solution

Combined with Boyle's law and Gay Lussac's law  

\tt \dfrac{P_1.V_1}{T_1}=\dfrac{P_2.V_2}{T_2}

T₁ = 39 + 273 = 312

T₂ = 16 + 273 = 289

Input the value :

V₂ = (P₁V₁.T₂)/(P₂.T₁)

V₂ = (99 x 3000 x 289)/(45.5 x 312)

or we can write it as:

V₂ = 3000 L x (289/312) x (99/45.5)

3 0
3 years ago
PLEASE HELP ME ASAP!! I NEED IT! NO LINKS
Natali [406]

Answer:

asexual cell

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3 0
3 years ago
When water freezes,it contracts true or false
Zigmanuir [339]
The correct answer is:  False.
_______________________________________________________
Water expands (gets larger/ is less dense in solid form than in liquid form) when it freezes).
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6 0
4 years ago
Read 2 more answers
0.0367 seconds is equal to how many milliseconds
Zigmanuir [339]
0.0367 seconds = 36.7 milliseconds
4 0
3 years ago
Frederick Griffith documented bacterial transformation. Which statement is true concerning his experiments?
raketka [301]

Answer:

DNA from dead Streptococcus cells entered live cells and altered the live cell's characteristics

<em>I hope this helps you</em>

<em>:)</em>

8 0
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