All of the following are true of metals exceptA. can conduct electricity
B. have luster
C. have low melting points ###
D. are malleable

is my answer right?

Answers

Answer 1

Answer: Have low melting point

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Which compound of an element in period 3 reacts with water to form a solution with a pH greater than 7?A. SiO2B. SiCl4C. NaClD. Na2O
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How does having a diverse gene pool help a species survive

How is the water supply for New York being protected?

Answers

because of good government and there is skilled manpower who help and protect the water supply for New York being protected............

Which stays the same during chemical reactions? the overall types of atoms only
the overall numbers of atoms only
both the overall types and numbers of atoms
neither the overall types or numbers of atoms

Answers

Both the overall types and numbers of atoms stay the same during chemical reactions.

2. A solution in which 50 grams of salute is dissolved in 250 grams of solution has a concentration of

Answers

The fact that the unit is supposed to be in percent makes me think it is referring to percent mass. To find percent mass you need to find find the divide the mass of solute by the total mass of solution and than multiply that by 100%.
%mass=(50g/300g)x100%
%mass=0.167%

I hope this helps.

Why burning methane does not produce acid rain

Answers

In this exercise we have to use our knowledge of acid rain, as:

Only methane fires will not produce acid rain since acid rain usually occurs in areas of high population concentration, industries and with high levels of emission of pollutants such as CO2 and methane.

What causes acid rain?

The main consequences of acid rain are: The soil can change when acid rain reaches the surface, becoming acidified. Soil contamination can also cause contamination of water courses, such as rivers and lakes, as well as underground water reserves.

See more about acid rain at brainly.com/question/53991

Methane is a thick substance not allowing it to fill the air and it is also a natural gas, so it would cause no harm.

What is the pH of a solution with (H3O+)=5.6x10-2M?

Answers

Answer:

Explanation:

Given parameters:

Concentration of H₃O⁺ = 5.6 x 10⁻²M

Solution:

To solve for the concentration of H₃O⁺ in the solution, we simply use the expression below:

pH = -log₁₀[H₃O⁺]

where [H₃O⁺] = 5.6 x 10⁻²M is the concentration of H₃O⁺

pH = -log₁₀[5.6 x 10⁻²] = - x -1.25 = 1.25

Answer:

1.25 is the pH of the given solution

Explanation:

We can determine the acidity or the basicity of the solution using the pH value.

The solution is acidic if the pH value ranges from 0 to 6.9

The solution is Basic if the pH value ranges from 7.1 to 14

The solution is neutral if the pH value is 7.

pH is defined as the negative logarithm of the Hydrogen ion concentration, that’s why the formula to find pH is given by

$pH=-log[H^+]$

$pH=-log[H_3O^+]$

$pH=-log[5.6*10^(-2) M]$

$=-(1.25)$

$pH=1.25$

(Answer)

Please note:

When an hydrogen atom loses an electron, Hydrogen ion is formed, which will contain 1 positive proton and 0 negative electron and 0 neutral neutron.

Thus Hydrogen ion has a + charge.

Hydrogen ion is also called as a proton since it has only 1 proton in it.

Hydrogen ion in water that is,

$H^++H_2 O> H_3 O^+$