Helppp me pretty please

Answer:

At the top of Group 11 above silver and gold.

Period 4

Explanation:

Answer:

steel

Explanation:

Answer:

B. STEEL

Explanation:

Answer:

The correct answer would be

B. 2 Na atoms

Explanation:

As seen in the picture below,

Answer:

A solution of potassium chloride when mixed with silver nitrate solution forms an insoluble white substance silver chloride.

Explanation:

:)

Answer: to copy itself during cell division

Explanation:

hormone erythropoietin (EPO) is responsible for the production of red blood cells.

Answer:(D) different number of neutrons per atom

Explanation: Honestly, I just looked it up on Socratic.

Answer:

Explanation:

Heterotrophs cannot make their own food, so they must eat or absorb it. For this reason, heterotrophs are also known as consumers. Consumers include all animals and fungi and many protists and bacteria. They may consume autotrophs or other heterotrophs or organic molecules from other organisms

Answer:

Sodium chloride

Explanation:

There are several salts in seawater, but the most abundant is ordinary table salt or sodium chloride (NaCl). Sodium chloride, like other salts, dissolves in water into its ions, so this is really a question about which ions are present in the greatest concentration. Sodium chloride dissociates into Na+ and Cl- ions.

Answer:

2.71

Explanation:

Answer:

No, not well balanced

Explanation:

2Nacl+F2=2Naf+Cl2

Answer:

4.03 g

Explanation:

The mass in grams of the hydrogen gas is 4.0 g

From the question,

We are to determine the mass in grams of the hydrogen gas.

First, we will determine the number of moles of hydrogen gas present.

Using the formula,

[tex]Number\ of\ moles =\frac{Number\ of \ molecules}{Avogadro's\ constant}[/tex]

From the given information,

Number of hydrogen molecules = 1.204 × 10²⁴ molecules

Thus,

Number of moles of hydrogen gas present = [tex]\frac{1.204 \times 10^{24} }{6.02 \times 10^{23} }[/tex]

Number of moles of hydrogen gas present = 2 moles

Now, for the mass of the hydrogen gas

Using the formula,

Mass = Number of moles × Molar mass

Molar mass of hydrogen gas = 2.016 g/mol

Then,

Mass of the hydrogen gas = 2 × 2.016

Mass of the hydrogen gas = 4.032 g

Mass of the hydrogen gas ≅ 4.0 g

Hence, the mass in grams of the hydrogen gas is 4.0 g

Learn more on Stoichiometry here: https://brainly.com/question/2861244

Answer:

a

Explanation:

the traits of the organism

Explanation:

The processes involved in removing the contaminants include physical processes such as settling and filtration, chemical processes such as disinfection and coagulation, and biological processes such as slow sand filtration

Answer: Compound

Explanation:

Copper(II) oxide or cupric oxide is the inorganic compound with the formula CuO. A black solid, it is one of the two stable oxides of copper, the other being Cu₂O or copper(I) oxide. As a mineral, it is known as tenorite.

Answer:

C NaCl will not be an empirical formula.

Answer:

C naCl

Explanation:

it wouldnt be an empiricla formula

Answer:

5a. 13.5 moles of F₂

5b. 3.33 moles of Ar.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

3F₂ + 2Ar —> 2ArF₃

From the balanced equation above,

3 moles of F₂ reacted with 2 moles of Ar to produce 2 moles of ArF₃.

5a. Determination of the number of mole of fluorine, F₂, needed to produce 9 moles of ArF₃.

From the balanced equation above,

3 moles of F₂ reacted to produce 2 moles of ArF₃.

Therefore, Xmol of F₂ will react to produce 9 moles of ArF₃ i.e

Xmol of F₂ = (3 × 9)/2

Xmol of F₂ = 13.5 moles

Thus, 13.5 moles of F₂ is needed.

5b. Determination of the number of mole of Ar needed to react with 5 moles F₂.

From the balanced equation above,

3 moles of F₂ reacted with 2 moles of Ar.

Therefore, 5 moles of F₂ will react with = (5 × 2)/3 = 3.33 moles of Ar.

Thus, 3.33 moles of Ar was consumed.

Answer:

X = 2

Explanation:

As you know, the rate of a first-order reaction depends linearly on the concentration of a single reactant. The rate of a first-order reaction that takes the form

Answer:

NO is the limiting reactant.

Explanation:

4NH3 + 6NO --> 5N2 + 6H2O

Molar ration NH3 : NO = 10: 30 = 1: 3

Stoichiometric molar ration NH3:NO = 4:6 = 2:3

NO is the limiting reactant.

Answer:

Those individuals with advantageous traits are more likely to survive and reproduce. The survivors pass down these advantageous traits to their offspring.

Explanation:

Answer:

1.81

Explanation:

3*16=n(0.0821)(48+273)

Answer:

because it is so fundamental to our world . chemistry plays a role in everyone lives.

It touches almost every aspect of our existence in some way.

Chemistry is essential for meeting our basic needs of food, cloth, etc.

Chemistry plays a important and useful role towards the development and growth of industries.

chemistry also helps you become who you want to be.

Answer:

Hydorgen will.

Because hydrogen has 1 as valency.

Answer:

atomic number

Explanation:

Elements are organized on the table according to their atomic number, usually found near the top of the square.

Answer:

by their atomic number

hope this helped