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3 years ago

Non metal used to preserve food material

Chemistry

1 answer:

amid [387]3 years ago

6 0

Answer:

Nitrogen

Explanation:

Because of its inert nature

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Evaporation and condensation

bagirrra123 [75]

Answer:

Evaporation and condensation are two processes through which matter changes from one state to another.

Explanation:

7 0

4 years ago

Read 2 more answers

What is the mass of an object if force of -136 n can make it accelerate at -9.6 m/s^2

vampirchik [111]

The answer for the following problem is mentioned below.

Therefore the mass of an object is 14.16 grams.

Explanation:

Force:

The push or pull on an object with mass that cause change in the velocity

It is a vector quantity.

The formula to calculate the force is:

F = m × a

Given:

Force (F) = -136 N

acceleration (a) = -9.6 m/s^2

To calculate:

mass of the object (m)

We know that,

F = m × a

where,

F represents the force of the object

m represents mass of an object

a is acceleration of an object

From the equation;

-136 = m × -9.6

m = $\frac{-136}{-9.6}$

m = 14.16 grams

Therefore the mass of an object is 14.16 grams.

3 0

4 years ago

A peach falls from a tree with an acceleration of 9.8 m/s2. The peach has a mass of

svlad2 [7]

Answer:

F = 0.0725 N

Explanation:

Given that,

The mass of peach, m = 7.4 g

We need to find the force acts on the peach when it falls from a tree. The force is given by :

F = mg

So,

$F=7.4\times 10^{-3}\times 9.8\\\\F=0.0725\ N$

So, the force is 0.0725 N.

5 0

3 years ago

What is unique about the way that transition metals form compounds?

Alika [10]

Answer:

A. They don't form compounds

Explanation:

High density: The strong bonding between the atoms in transition metals cause them to be tightly held together, creating a high density. Colored compounds: Transition metals tend to form more colored compounds than other elements, either in solid form or dissolved in a solvent.

4 0

3 years ago

Read 2 more answers

Given the half‑reactions and their respective standard reduction potentials 1. Cr 3 + + e − ⟶ Cr 2 + E ∘ 1 = − 0.407 V 2. Cr 2 +

Licemer1 [7]

Answer:

The standard reduction potential for the reduction half‑reaction of Cr(III) to Cr(s) is -0.744 V

Explanation:

Here we have

1. Cr³⁺ + e − ⟶ Cr²⁺ E⁰₁ = − 0.407 V

2. Cr²⁺ + 2 e − ⟶ Cr ( s ) E⁰₂ = − 0.913 V

To solve the question, we convert, the E⁰ values to ΔG as follows

ΔG₁ = n·F·E⁰₁ and ΔG₂ = n·F·E⁰₂

Where:

F = Faraday's constant in calories

n = Number of e⁻

ΔG₁ = Gibbs free energy for the first reaction

ΔG₂ = Gibbs free energy for the second half reaction

E⁰₁ = Reduction potential for the first half reaction

E⁰₂ = Reduction potential for the second half reaction

∴ ΔG₁ = 1 × F × − 0.407 V

ΔG₂ = 2 × F × − 0.913 V

ΔG₁ + ΔG₂ = F × -2.233 V which gives

ΔG = n × F × ΔE⁰ = F × -2.233 V

Where n = total number of electrons ⇒ 1·e⁻ + 2·e⁻ = 3·e⁻ = 3 electrons

We have, 3 × F × ΔE⁰ = F × -2.233 V

Which gives ΔE⁰ = -2.233 V /3 = -0.744 V.

7 0

3 years ago

Non metal used to preserve food material​

Non metal used to preserve food material