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IrinaK [193]
3 years ago
7

He (Helium) is _________ atomic molecule.

Chemistry
2 answers:
babunello [35]3 years ago
8 0

Answer:

Monatomic molecule

Explanation:

Each helium atom has 2 electrons, which is already the maximum no. of electrons that can fit in the first electron shell. When the outermost electron shell is full (2 for the first layer, 8 for others), the atom is stable.

Helium atom itself is already stable, so it doesn't need to combine with another helium atom to form a molecule, hence we call it monatomic.

Natalija [7]3 years ago
7 0
Monatomic molecule , molecule composed of just one atom, and lacking any covalent bonds. The noble gases (He, Ne, Ar, Kr, Xe, and Rn) are all monoatomic, whereas most other gases are at least diatomic. Approximate Composition of the Atmosphere at the Earth's Surface. Nitrogen.
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How many molecules of sugar are there in 1 can of soda?
Korvikt [17]

Answer:

5.8\cdot 10^{22}

Explanation:

Since no information was provided about the can of soda, let's take an example of 1 can of 12 fl oz (368 g) Coca-Cola.

The nutrition facts state that it contains 33 g of sugar. In order to calculate the number of molecules, we firstly need to know the molecular formula of sugar. Sugar can be represented by C_{12}H_{22}O_{11}.

Our first step is to find the molar mass of sugar:

M_{C_{12}H_{22}O_{11}} = 342.3 g/mol

Secondly, dividing mass of sugar, m = 33 g, by the molar mass will yield the number of moles of sugar:

n_{C_{12}H_{22}O_{11}}=\frac{m}{M}

Finally, multiplying moles by the Avogadro's constant will yield the number of molecules:

N_{C_{12}H_{22}O_{11}}=n_{C_{12}H_{22}O_{11}}\cdot N_A =\frac{m}{M} \cdot N_A = \frac{33 g}{342.3 g/mol} \cdot 6.022 \cdot 10^{23} mol^{-1} = 5.8\cdot 10^{22}

8 0
4 years ago
What should be the effect of losing ones sight on the ability to digest food
crimeas [40]

One mechanism is enzyme induction.

Enzymes are proteins, which are metabolically expensive to produce. It makes evolutionary sense that your body makes less digestive enzymes such as lactase and sucrase when they're not needed. If your diet changes, your body can gradually increase the production of some enzymes through a process of enzyme induction.

For example, the production of lactase enzyme can be increased in some lactose-intolerant individuals by feeding them lactose . Also, studies in rats have shown that other carbohydrate-digesti<span>Your body makes more of what it needs, and less of what it doesn't need--brilliant!</span>ng enzymes, such as sucrase-isomaltase, trehalase, and maltase-glucoamylase--can be induced by hydrocortisone administration. 

4 0
3 years ago
HELP ASAP 20 PTS!!!
sashaice [31]
Basically they are asking you to find the element that is most closely associated with these clues.

1. Fireworkium: 15 protons and 15 electrons? No problem. We can see that the atomic number is 15, in which in real life, the element is Phosphorous. (Phosphorous is a common element in fireworks for an explosive personality and colors)

2. Toothium: A nonmetal with average mass number close to 19? We check the periodic table once more and find that Fluorine is our answer. (Notice that fluorine is in toothpaste, which is why they decided the name Toothier)

3. Breathium: Now honestly, I didn't even have to check the periodic table but just realize that we breath Oxygen. But if you want the straight answer, Oxygen is a nonmetal which has an atomic mass close to 16, and surprise, it has one less proton than Fluorine.

4.Lightium: Immediately we see that since this gas does not react with other elements, it is a noble gas. If it glows in a lamp or vacuum tube, we can also see it is of a light origin. If it has one more proton than Toothium (Fluorine) than we can immediately see that in the periodic table, our answer is Neon.

5. Rottoneggium: We can immediately guess sulfur. The straight way shows that it has 16 electrons, and the non-ion atom should also have 16 protons. Therefore, our answer is Sulfur.

6. I just realized I forgot Floatium: If it has 2 protons, we look in the periodic table and see that our answer is Helium.
7 0
3 years ago
Match with O for organic and I for inorganic for each compound.
Vika [28.1K]

Answer:

Organic compounds: C₃H₆, and C₂H₂.

Inorganic compounds: NaS, SO₂, and HI.

Explanation:

Organic compounds are the molecules that have a carbon backbone with hydrogen atoms in its structure.

While, inorganic molecules are composed of other elements. They can contain hydrogen or carbon, but if they have both, they are organic.

<em>So:</em>

<em>Organic compounds are C₃H₆, and C₂H₂.</em>

<em>Inorganic compounds are NaS, SO₂, and HI.</em>

5 0
3 years ago
The equation for the complete combustion of methane is ch4(g) + 2o2(g) → co2(g) + 2h2o(l) to calculate the number of grams of co
Nonamiya [84]
To determine the number or amount of carbon dioxide produced from the equation, we have to note from the given chemical reaction that the ratios of the moles of the participating reactants and the resulting products will be obtained.

The first step to answering this item is to determine the number of moles of CH4 by dividing the given amount in grams by the molar mass. Molar mass of methane, CH4, is equal to 16 g/mol.

The first conversion factor is therefore is 16 g/mol. 
6 0
3 years ago
Read 2 more answers
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