The tungsten- nuclide radioactively decays by alpha emission. Write a balanced nuclear chemical equation that describes this process.

Answer: H2O and NH3 are polar molecules. H2 is a nonpolar molecule but the H-H bond is also nonpolar.

Therefore, the best choice is CCl4. Although the C-Cl bond is polar due to electronegativity differences, the molecule itself is nonpolar because the net dipole moments cancel out, given its tetrahedral molecular structure.

Explanation:

Answer:

Cell --> Tissues --> Organs ---> Organ System ---> Organism

The molarity of a solution : 2.24

Molarity shows the number of moles of solute in every 1 liter of solution or mmol in each ml of solution

[tex]\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}[/tex]

Where

M = Molarity

n = number of moles of solute

V = Volume of solution (L)

4.83 moles of NaCl in 2.16 L solution

n = 4.83

V = 2.16 L

Molarity :

[tex]\tt M=\dfrac{4.83}{2.16}=2.2361\rightarrow 3~sig~figs=2.24[/tex]

Answer: C.

Explanation:

Answer:

[tex]M=2.24M[/tex]

Explanation:

Hello!

In this case, since the molarity and volume of the solutions are given, we are able to compute the moles of chloride ions as they are present in NaCl only:

[tex]n_{Cl^-}=3.00L*3.74\frac{molNaCl}{L}*\frac{1molCl^-}{1molNaCl} =11.22molCl^-[/tex]

Next, since the mixing of solution A and B lead to a volume of 5.00 L, the concentration of chloride ions turns out:

[tex]M=\frac{11.22mol}{5.00L}=2.24M[/tex]

Best regards!

Answer:

compound

Explanation:

it is calcium oxide, also known as quicklime

Answer:

because it is not a rock and it is not thick so it can float

Explanation:

because it is thin and light

Answer:

2nd answer is correct. Hope it helped you!

Answer:

Hydrogen, lithium, sodium, and potassium all have 1 valence electron ( an electron in the outermost energy level is a valence electron).

Answer: I think it’s A.

Explanation:

Tell me if it’s wrong sorry, I am only in middle school level science.

Answer:

the type is single replacement

The given reaction equation represents a single-replacement reaction.

Explanation:

                   ABC→ A+B+C

                   A+B+C → ABC

                   AB+ C → AC + B

                  AB+ CD → AC + BD

Given:

[tex]Fe + CuCl_2 \rightarrow FeCl_2 + Cu[/tex]

To find:

The type of chemical reaction represented by the given equation.

Solution:

In the given reaction:

[tex]Fe + CuCl_2 \rightarrow FeCl_2 + Cu[/tex]

Iron is replacing copper from its compound which is copper(II) chloride to give iron(II) chloride and copper as a product.

So from this, we can conclude that the given reaction equation represents a single-replacement reaction.

Learn more about types of chemical reactions here:

brainly.com/question/1071297?referrer=searchResults

brainly.com/question/12844777?referrer=searchResults

Answer:

a. 7.8 × 10⁻⁴ M

b. 1.3 × 10⁻³ M

Explanation:

We can calculate the solubility of a gas using Henry's law.

S = k × P

where,

a. Determine the solubility of He

S = k × P

S = 3.7 × 10⁻⁴ M/atm × 2.1 atm

S = 7.8 × 10⁻⁴ M

a. Determine the solubility of N₂

S = k × P

S = 6.0 × 10⁻⁴ M/atm × 2.1 atm

S = 1.3 × 10⁻³ M

Answer:

Gravity

Explanation:

Answer: gravity

Explanation: gravity has is an “invisible force” that holds matter down instead of floating off into space.

Answer:

CCl₄

Explanation:

The molecule with a tetrahedral molecular geometry is CCl₄.

We know this according the valence shell electron pair repulsion theory.

To have a tetrahedral shape, a molecule must be made up of 4 bond pairs and no lone pairs.

This is clearly exhibited in the compound given;

 The central atom has 4 valence electrons which is completed bonded by 4 chlorine atom.

There is no lone pair but we have 4 bond pairs and a tetrahedral shape is formed.

Answer:

woowwwww.... ur right Imao

Explanation:

Shower thoughts be like*

it is for sure sure false

Answer:

False they are on the extremes of the earth they are poles they are so cold the temp is freezing there and near the equator it would hot

Answer:A = $90

B = $390

Explanation:

The aspect of the environmentally sustainable society has not been soil erosion.

An environmentally sustainable society has been the one that has been able to meet the current and future needs of the generation. The plantation of trees, reducing the greenhouse effect, and the method for the generation of a sustainable environment has been the characteristic of a sustainable society.

The soil erosion results in damage to the soil with the flow of the upper layer of soil from the water flow. The soil erosion will be resultant in damage to the environmentally sustainable society.

For more information about environmentally sustainable society, refer to the link:

https://brainly.com/question/17666127

Answer:According to the sliding filament theory, a muscle fiber contracts when myosin filaments pull actin filaments closer together and thus shorten sarcomeres within a fiber.

Explanation:

No need for an explanation if i just answered it

Answer:

hydrogen atom but see the note below.

Explanation:

This is either the most common hydrogen ion or a hydrogen atom. It cannot be either of hydrogen's isotopes.

Answer:

In general, metal and nonmetals combine to form ionic compounds

Explanation:

Volume of Glucose solution = 144 mL  OR 0.144 L

Molarity of Glucose solution = 0.280 M

From the definition of Molarity, we know that:

Molarity = number of moles / volume(in L)

in this equation, multiplying both sides by Volume, we get:

number of moles = Molarity*Volume(in L)

replacing the variables

Number of moles = 0.280*(0.144L)

Number of moles = 0.04

We know that:

Number of molecules = Number of Moles * Avogadro's number

Number of molecules = 0.04 * 6.022 * 10²³

Number of molecules = 0.24088 * 10²³

Number of molecules = 2.4088 * 10²²

Therefore, there are 2.4088 * 10²² molecules of Glucose in the given solution

Answer:

C. 4.8*10² g.

Explanation:

Answer:

[Ar] 3d¹⁰ 4s² 4p³

Explanation:

so...... ur welcome

Answer:

Explanation:

The new volume can be found by using the formula for Boyle's law which is

[tex]P_1V_1 = P_2V_2[/tex]

Since we are finding the new volume

[tex]V_2 = \frac{P_1V_1}{P_2} \\[/tex]

From the question we have

[tex]V_2 = \frac{25 \times 4.38}{0.65} = \frac{109.5}{0.65} \\ = 168.46153...[/tex]

We have the final answer as

Hope this helps you

Answer: Al2O3

Explanation:

Answer:

Photosynthesis makes the glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.

hope this helps!

Answer:

Products

Explanation:

Reactants → Products

Chemical reactions are characterized by the formation of new products, and the making and breaking off strong chemical bonds.

Answer: They are the PRODUCTS of the reaction.

Explanation: In a chemical reaction, there are the REACTANTS and the PRODUCTS.

The reactants are the "ingredients" in the chemical formula. They are what are being chemically combined in a way.

The products are the "meal," or what the reactants combined to create.

For example, when creating salt or NaCl, this is essentially the formula:

In this formula, Na (sodium) and Cl (chlorine) are the reactants. NaCl (sodium chloride, aka salt) is the product.

I hope this clears things up, and I hope this was the context in which the question was asked!

Answer:

[tex]M=0.8M[/tex]

Explanation:

Hello!

In this case, since the presence of silver ions is in AgNO3 only, we can compute their moles by using the volume and concentration of the corresponding salt:

[tex]n_{Ag^+}=2.00L*2.00\frac{mol}{L}=4molAg^+[/tex]

Next, since the total volume of solution C is 5.00 L, the required concentration of silver ions turn out:

[tex]M=\frac{4.00mol}{5L} =0.8M[/tex]

Best regards!