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Vaselesa [24]
3 years ago
7

Can someone please help me. Like right now please

Chemistry
1 answer:
EastWind [94]3 years ago
8 0

Answer:

3rd law

Explanation:

when two objects interact, they apply forces to each other of equal magnitude and opposite direction.

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Which of these trends increase as you go from top to bottom on the Periodic Table? Select all that apply.
Oduvanchick [21]

b. atomic radius

as it goes increases when it goes down the periodic table, it decreases when going left to right. all the others decrease while going down the table.

if it helps you to remember, everything here besides atomic radius has an e in it. and if you make a connection with it to electrons, they are negative, which means they would decrease going down the table. so e=decrease while going down

thats what helped me remember it, so i hope this technique could help you too.

4 0
3 years ago
An understanding of periodic trends is important because the trends 1. can be used to convert non-useful elements to useful ones
Andreas93 [3]
<span>3. relate to properties of elements and how they may react. Periodic trends are specific patterns that are present in the periodic table that include size, electronic properties, melting point, electronegativity and metallic character. The trends exist due to the similar atomic structure of the elements within each group family.</span>
8 0
3 years ago
A line in the hydrogen spectrum occurs at 434 nm. what is the frequency of this radiation in sec -1
Taya2010 [7]
The lines occurring in an emission spectrum are all electromagnetic waves, which means that their speed in a vacuum is
3 x 10⁸ m/s


We can use the equation,
v = fλ
which relates the velocity of a wave to the frequency and wavelength. Substituting values,

3 x 10⁸ = f * 434 x 10⁻⁹
f = 6.91 x 10¹⁴ Hz

The frequency of the wave will be 6.91 x 10¹⁴ oscillations per second.
7 0
3 years ago
A reaction mixture at equilibrium at 175 k contains ph2 = 0.958 atm, pi2 = 0.877 atm, and phi = 0.020 atm. a second reaction mix
Sophie [7]
 from ICE table
            H2(g) +  I2 (g )↔ 2HI(g)
 equ       0.958      0.877         0.02   first mix1
              0.621        0.621         0.101      sec mix2

Kp1 = P(HI)^2 / p(H2)*p(I2) for mix 1
       = 0.02^2 / 0.958*0.877
       = 4.8x10^-4
Kp2 = P(HI)^2 / P(H2)* P(I2) for mix 2
        = 0.101^2/ 0.621*0.621 
        = 0.0265
we can see that Kp1< Kp2 that means that the sec mixture is not at equilibrium. It will go left to reduce its products and increase reactant to reduce the Kp value to achieve equilibrium.

and the partial pressure of Hi when mix 2 reach equilibrium is:
4.8x10^-4 = P(Hi)^2 / (0.621*0.621)
∴ P(Hi) at equilibrium = 0.0136 atm



8 0
3 years ago
An odorless, colorless, poisonous gas is produced by the incomplete burning of fossil fuels. This gas also interferes with the b
xxMikexx [17]

Answer:

B

Explanation:

All the properties listed above is for carbon ii oxide.

It is odorless, colorless and poisonous

It is formed from the incomplete combustion of fossil fuels

And it can actually interfere with the blood’s ability to carry oxygen

3 0
3 years ago
Read 2 more answers
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