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3 years ago

10

Two or more elements chemically combined make a?

1 answer:

In-s [12.5K]3 years ago

5 0

Tqo or more elements combine to make a compound.

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Thompson, Rutherford, Bohr, Planck, and Einstein all contributed models to help describe the atom and atomic

irinina [24]

Answer:

d i think

Explanation:

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3 years ago

Which number is the same as 4.8 x104<br> a. 0.00048<br> b. 480000<br> C. 48000<br> d. 480

sashaice [31]

Answer:

I'm Pretty Sure It Would Be C

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3 years ago

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Consider this equilibrium constant expression:

alex41 [277]

The answer would be: <span>D. Kb for HS–
</span>
Kb is the dissociation constant of an acid/base molecule. The word b in Kb is base, which means the formula should have an OH- ion inside it. Ka would be the opposite of Kb where the formula has H+ ion.
In this question, the formula is: [H2S][OH-]/ [HS-]
Since there are OH- ion. Since H2S is acid and HS- is base, I think it should be <span>Kb for HS–
</span>

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4 years ago

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A compound with a formula mass of 42.08 amu is found to be 85.64 carbon and 14.36 hydrogen by mass find its molecular formula

Mars2501 [29]

brainly.com/question/8489178#respond

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3 years ago

At 304 K, a 9.6 L tank contains 1.9 moles of H2 gas under an unknown pressure in atm. What is the pressure of the gas in the tan

ratelena [41]

Answer:

The pressure is 4.939 atm

Explanation:

As we know

PV = nRT

where P is the pressure

V is the volume

n is the total number of moles

R is the gas constant

and T is the temperature

Substituting the given values we get -

$P * 9.6 = 1.9 * 0.0821 *304\\P = 47.420/9.6\\P = 4.939$

The pressure is 4.939 atm

8 0

3 years ago

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