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sveta [45]
3 years ago
5

BRAINLIESTTT ASAP!!! PLEASE HELP ME :)

Chemistry
2 answers:
umka21 [38]3 years ago
6 0

Hey Geny :)

I’m pretty sure the answer is B

Hope this helps you

-AaronWiseIsBae

Katarina [22]3 years ago
5 0

Answer:

Metals lose their valence electrons and form positive ions.

Explanation:

TOOK THE TEST AND GOT IT RIGHT

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An irreversible reaction is one that:
bazaltina [42]

Answer:

(d) has an extremely large equilibrium constant.

Explanation:

Hello,

Considering a generic chemical reaction:

aA+bB  cC+dD

The equilibrium constant is defined as:

K=\frac{[C]^c_{eq}[D]^d_{eq}}{[A]^a_{eq}[B]^b_{eq}} \\

Now, an irreversible chemical reaction is a reaction in which the reagents are converted into products with no chance of coming back, so, considering the previous chemical reaction, the concentration of both A and B tends to be zero, so an extremely large equilibrium constant is gotten.

Best regards.

5 0
3 years ago
If you were to measure the mass of magnesium and hydrochloric acid before combining them in the test tube, how would that mass c
SIZIF [17.4K]
The balanced chemical reaction for the system given is as follows:

2Mg + 2HCl = 2MgCl + H2

The mole ratio of the reactants is one is to one which means with a given amount of magnesium requires the same amount of hydrochloric acid to have a complete reaction. If supplied exactly, then after the reaction, all of the reactants are consumed and formed into the products.
5 0
3 years ago
Read 2 more answers
In a
dsp73

Answer:

1384 kJ/mol

Explanation:

The heat absorbed by the calorimeter is equal to the heat released due to the combustion of the organic compound. C is the total heat capacity of the calorimeter and Δt is the change in temperature from intial to final:

Q = CΔt = (3576 J°C⁻¹)(30.589°C - 25.000°C) = 19986.264 J

Extra significant figures are kept to avoid round-off errors.

We then calculate the moles of the organic compound:

(0.6654 g)(mol/46.07) = 0.0144432 mol

We then calculate the heat released per mole and convert to the proper units. (The conversion between kJ and J is infinitely precise and is not involved in the consideration of significant figures)

(19986.264 J)(1kJ/1000J) / (0.0144432 mol) = 1384 kJ/mol

8 0
3 years ago
PLEASE HELP!<br><br> Count the total number of atoms in H 2 O:<br><br> 2<br> 3<br> 4<br> 5<br> 6
Darya [45]
3
two hydrogen and 1 oxygen
8 0
3 years ago
Read 2 more answers
7. If you constructed graphs, what trends do they indicate in your data?
lisabon 2012 [21]
A tend line I believe (I am going off the other guy cause they are right.)
4 0
3 years ago
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