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3 years ago

Compare metals and non-metals in terms of their

Chemistry

2 answers:

bekas [8.4K]3 years ago

8 0

Answer:

(a). chemical properties. 

• Metals react with dilute mineral acids to form metal salts while non-metals react with dilute mineral acids to form aqueous solutions.

• Metals easily react with air ( oxygen ) compared to non-metals.

(b). Physical properties. 

• Metals are harder and ductile than non-metals.

• Metals conduct electricity while non-metals are insulators.

• Metals are solids at room temperature while non-metals are gases at room temperature.

Explanation:

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Arisa [49]3 years ago

6 0

Answer:

metals and non metals are compared are above

Explanation:

Hope this will help you

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In the reaction, A → Products, the rate constant is 3.6 × 10−4 s−1. If the initial concentration of A is 0.548 M, what will be t

Arada [10]

Answer:

$\large\boxed{\large\boxed{0.529M}}$

Explanation:

Since the rate constant has units of s⁻¹, you can tell that the order of the reaction is 1.

Hence, the rate law is:

$r=d[A]/dt=-k[A]$

Solving that differential equation yields to the well known equation for the rates of a first order chemical reaction:

$[A]=[A]_0e^{-kt}$

You know [A]₀, k, and t, thus you can calculate [A].

$[A]=0.548M\times e^{-3.6\cdot 10^{-4}/s\times99.2s}$

$[A]=0.529M$

7 0

4 years ago

vanadium has an atomic mass of 50.9415 amu. it has two common isotopes.one isotopes has a mass of 50.9440 amu and a relative abu

Kaylis [27]

Explanation:

Average atomic mass of the vanadium = 50.9415 amu

Isotope (I) of vanadium' s abundance = 99.75 %= 0.9975

Atomic mass of Isotope (I) of vanadium ,m= 50.9440 amu

Isotope (II) of vanadium' s abundance =(100%- 99.75 %) = 0.25 % = 0.0025

Atomic mass of Isotope (II) of vanadium ,m' = ?

Average atomic mass of vanadium =

m × abundance of isotope(I) + m' × abundance of isotope (II)

50.9415 amu =50.9440 amu× 0.9975 + m' × 0.0025

m'= 49.944 amu

The atomic mass of isotope (II) of vanadium is 49.944 amu.

5 0

3 years ago

Describe the process of making the four major macromolecules.

dybincka [34]

Answer:

Proteins, carbohydrates, nucleic acids, and lipids are the four major classes of biological macromolecules—large molecules necessary for life that are built from smaller organic molecules. Macromolecules are made up of single units known as monomers that are joined by covalent bonds to form larger polymers.

Explanation:

Have a great day!

8 0

3 years ago

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In one to two sentences, identify and describe the processes that must happen for sand to eventually become metamorphic rock.

max2010maxim [7]

Answer:

when sediments harden, extreme pressure increase the temperature and then take time to alter to metamorphic rocks. <3~

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3 years ago

Limescale removers contain sulfamic acid, H3NSO3, which reacts with minerals in hard water

I am Lyosha [343]

Answer:

0.375 moles of CaCO₃ are required

Explanation:

Given data:

Number of moles of sulfamic acid = 0.75 mol

Number of moles of calcium carbonate required = ?

Solution:

Chemical equation:

2H₃NSO₃ + CaCO₃ → Ca(SO₃NH₂)₂ + CO₂ + H₂O

Now we will compare the moles of H₃NSO₃ and CaCO₃ .

H₃NSO₃ : CaCO₃

2 : 1

0.75 : 1/2×0.75 = 0.375 mol

Thus, 0.375 moles of CaCO₃ are required.

4 0

3 years ago