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Archy [21]
3 years ago
10

The conjugate base of H2CO3 is ___________

Chemistry
2 answers:
olasank [31]3 years ago
7 0

Answer:

HCO₃

Explanation:

SOVA2 [1]3 years ago
4 0

Base loses H⁺ ion

HCO₃⁻

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What is the average atomic mass of all of the naturally occurring isotopes of nickel in amu?
My name is Ann [436]
In general chemistry, isotopes are substances that belong to one specific element. So, they all have the same atomic numbers. But they only differ in the mass numbers, or the number of protons and neutrons in the nucleus. In a nutshell, they only differ in the number of neutrons.

For Nickel, there are 5 naturally occurring isotopes. Their identities, masses and relative abundance are listed below

  Isotope                Abundance           Atomic Mass
   Ni-58                    68.0769%              <span>57.9353 amu
   Ni-60                    </span>26.2231%              <span>59.9308 amu
   Ni-61                    </span>1.1399 %               <span>60.9311 amu
   Ni-62                    </span>3.6345%                <span>61.9283 amu
   Ni-64                    </span>0.9256%                <span>63.9280 amu

To determine the average atomic mass of Nickel, the equation would be:
Average atomic mass = </span>∑Abundance×Atomic Mass

Using the equation, the answer would be:
Average atomic mass = 57.9353(68.0769%) + 59.9308(26.2231%) + 60.9311(1.1399%) + 61.9283(3.6345%) + 63.9280(0.9256%)

Average atomic mass = 58.6933 amu
3 0
4 years ago
PLZ HELP ME!!! I'll give brainliest to whoever answers this along with 15 points!
Readme [11.4K]

I would say diamond, because it consists only of carbon

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3 years ago
Two students make a model of a tree house they want to build. the scale is 1:42 in the scale model the tree house door is 3 cm t
Flura [38]

Answer:126

Explanation:

4 0
3 years ago
18)
Nadya [2.5K]

Answer:

B)

Explanation:

because the wind is moving the sand and the rain moves the soil

16) weathering and erosion

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3 years ago
You measure water in two containers:a 10-mL graduated cylinder with marks at every mL, and a 1-mL pipetmarked at every 0.1 mL. I
Reptile [31]

Answer:

B. 0.1 mL

Explanation:

The solution explanation has been attached.

6 0
3 years ago
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