I need help with a chemistry question

Elements riddle: Without my next door neighbor, I wouldn’t be worth 6 cents. Who am I?

zalisa [80]

If I understand this right, the two elements are Nickel and Copper, elements 28 and 28, respectively. A nickel is worth 5 cents, and a penny, originally comprised of copper, is worth one - the total being six cents.

7 0

3 years ago

What charge does a covalent bond have?

lys-0071 [83]

Basically a covalent bond would have been made based on two atoms so that it can collaboratively set a trace of more electrons. Although there is no atom that is zero which if it had that then it would considerably be a net charge which it is not from this problem. What makes it unique about it is that this attractive force from creating the bond of the electrons that would be purposely activated that are the nuci for constructive used into two atoms.

8 0

3 years ago

How do you balance the following solution Zn(s)+HCI(aq)—>ZnCI2 (aq) + H2(g)

Ierofanga [76]

Answer: The atoms of every element on both the sides of the reaction must be same.

Explanation:

We are given a chemical equation and we need to balance it. Every equation follows Law of Conservation of mass.

This law states that in a chemical reaction, the number of atoms of each element must be same on both the sides of the equation.

For the given chemical equation:

$Zn(s)+HCl(aq)\rightarrow ZnCl_2(aq)+H_2(g)$

On reactant side:

Number of zinc atoms = 1

Number of hydrogen atoms = 1

Number of chlorine atoms = 1

On product side:

Number of zinc atoms = 1

Number of hydrogen atoms = 2

Number of chlorine atoms = 2

As, the number of hydrogen and chlorine atoms on reactant and product side is not same, so we need to add a stoichiometric coefficient in-front of HCl on the reactant side. The balanced chemical equation becomes:

$Zn(s)+2HCl(aq)\rightarrow ZnCl_2(aq)+H_2(g)$

8 0

4 years ago

Gasoline is a product of crude oil, compressed organic matter formed from accumulations of algae millions of years ago. Some pla

timofeeve [1]

Answer:

Gasoline/oil is not renewable

7 0

3 years ago

For the reaction a+2b→c under a given set of conditions, the initial rate is 0.180 m/s. part a what is δ[b]/δt under the same co

SOVA2 [1]

Answer:

- 0.36 m/s.

Explanation:

For the reaction: a + 2b → c,

∵ The initial rate of the reaction = - δ[a]/δt = - 1/2 δ[b]/dt = 0.180 m/s.

∴ The initial rate of the reaction = - 1/2 δ[b]/dt = 0.180 m/s.

∴ - 1/2 δ[b]/dt = 0.180 m/s.

∴ δ[b]/dt = (- 2)(0.180 m/s) = - 0.36 m/s.

8 0

4 years ago