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Evgesh-ka [11]
3 years ago
12

BRAINLIESTTT ASAP!! PLEASE HELP ME :)

Chemistry
2 answers:
Luba_88 [7]3 years ago
5 0

Answer : Yes, the given statement is true.

Explanation :

As we know that the carbon has four valence electrons. The carbon is the only atom which has catenation property.

Catenation : It is a self-linkage of atoms of the same element into a longer chains. It forms covalent bonds with the other carbon atoms and form longer structures.

The covalent bonds are formed by the sharing of electrons.

Carbon atoms can form single, double, or triple bonds.

Single bond : It is a type of chemical bond in which a pair of electrons is shared between the two carbon atoms.  (C-C)

Double bond : It is a type of chemical bond in which 2 pairs of electrons are shared between the two carbon atoms.  (C=C)

Triple bond : It is a type of chemical bond in which 3 pairs of electrons are shared between the two carbon atoms. (C\equiv C)

Hence, the given statement is true.

Karo-lina-s [1.5K]3 years ago
4 0
True
Hope this helps :)
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3 years ago
An ideal gaseous reaction (which is a hypothetical gaseous reaction that conforms to the laws governing gas behavior) occurs at
lana [24]

Answer:

ΔU = −55.45 kJ

Explanation:

From first law of thermodynamics in chemistry, we have;

ΔU = Q + W

where;

ΔU is change in internal energy

Q is the net heat transfer

W is the net work done

We are given;

Q = 74.6 kJ

But Q will be negative since heat is released

Thus;

ΔU = -74.6 kJ + W

We are given;

Constant pressure; P = 35 atm = 35 × 101325 = 3546375 N/m²

Volume before reaction; Vi = 8.2 L = 0.0082 m³

Volume after reaction; V_f = 2.8 L = 0.0028 m³

Now,

W = -P(V_f - V_i)

W = - 3546375(0.0028 - 0.0082)

W = 19.15 KJ

Thus;

ΔU = Q + W

ΔU = -74.6 kJ + 19.15 KJ =

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6 0
2 years ago
Determine the mass of sodium carbonate required to produce 23.4g of sodium chloride when it reacts with excess hydrochloric acid
Leni [432]
The balanced chemical reaction for the described reaction above is,
                          Na2CO3 + 2HCl ---> 2NaCl + H2CO3
From the reaction, 1 mole of Na2CO3 is needed to produce 2 moles of NaCl. In terms of mass, 106 grams of Na2CO3 are needed to produce 116.9 grams of NaCl. From this,
                (23.4 g NaCl) x (106 g Na2CO3 / 116.9 NaCl = 21.22 g Na2CO3
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2 years ago
What makes elements in a group similar to one another and how would this affect their properties?
adell [148]
Elements in the same group have similar reactivities. For example, elements in group 1 are highly reactive, since they can all take in 7 electrons. Hope I helped!
6 0
3 years ago
What quantity in moles of HCl are there in 35.0 mL of 0.350 M HCl?
marta [7]

Answer:

0.0123 moles

Explanation:

Concentration = Moles / Volume of solution

or you can rearrange the formula to get

Moles = concentration (moles/liter)  x  volume of solution (liter)

First convert your volume to L instead of mL.  35mL = 0.035L

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moles = 0.0123

5 0
2 years ago
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