How adding tin to copper makes the bronze alloy harder?

Answers

Answer 1

Answer: It makes the bronze stronger and harder than either of the other two medals

Answer 2

Answer: The molecules are different sizes so they can’t move past each other in the structure.

Related Questions

Which of the following substances can be classified as a salt?A.Sodium Chloride (NaCl)B.Vinegar (CH3COOH)C.Baking Soda (NaHCO3)D.Bleach (NaClO)
How many grams of C3H8 would be needed to produce 6.39 grams of CO2?
Why is mitosis a form of asexual reproduction?
9. In a period, do the number of shielding electrons change? Why do you thinkor shielding electrons change? Why do you think atomic radius decreases across aperiod?
Standard reduction potentials are based on which element?A. heliumB. hydrogenC. lithiumD. oxygenE. zinc

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 the concentration of A (in M) at t = 99.2 s? Only enter the numerical value with three significant figures in the answer box below. Do NOT type in the unit (M).

Answers

The value of the concentration of A is 0.529.

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

Rate of first -order reaction,

$(A)=A_(0) e^(-kt)$

Here, $A_(0)$ is the initial concentration, t is the time, A is the final concentration, and k is the rate constant.

Substitute the given value values in the equation as follows,

$(A)=0.548M e^{-3.6*10^{-4s^(-1)*99.2s } } \n=0.529M$

The concentration of A in (M) is 0.529.

Find more information about first- order reaction here,

brainly.com/question/13309369

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].

$[A]=0.548M* e^{-3.6\cdot 10^(-4)/s*99.2s}$

$[A]=0.529M$

What are some natural sources for cyanide

Answers

It can be found in cigarette smoke, plastic, cassava, Lima beans, and almonds

Cyanide is found in very many places, some we would never expect. Here's a list of what I know has traces of or has cyanide in it.

Paper.
Textiles.
Plastics.
Bug Killer (Cyanide gas is used to exterminate pests and vermin in ships and buildings)
Artificial Nail Remover.
Any sort of acetonitrile-based products.
It is used to remove gold from it's ore.
It is present in the chemicals used to make photographs.
Cigarette Smoke
Vehicle Exhaust
Spinach.
Bamboo Shoots.
Almonds.
Lima Beans.
Miscellaneous Fruit Pits.
Tapioca.

These are just what I know of, I'm sure there's many more.

Hope this helped! :)

Hydrogen does not occur in free state on the earth. Why?

Answers

Answer:

ExplanatioHydrogen cannot exist in free state as hydrogen needs an electron to attain stability. If an element does not attain stability it cannot exist on its own. In Sun there are large number hydrogen atoms and helium atoms present this creates a lot of energy and nuclear fusions are occured. Gases that attain stability can normally exist on their own. E.g. Argon, Neon, Helium, Krypton and Xenon. Gases that cannot exist on their own are:

Hope it helped a little......

Given the following reaction: 2 OF2 + 2 S → SO2 + SF4 + 319.5 kJ Is this endothermic or exothermic? Draw the energy pathway:

Answers

Answer:

It is an exothermic reaction.

Explanation:

Why? Since the kJ is added to the product side, we know that this is an exothermic reaction since it is releasing heat. Endothermic reactions absorb heat and thus it would be represented on the products side.

To represent this exothermic reaction we would draw a curve starting mid graph then it goes up and then dropsdown. In other words, it looks downhill since it's releasing heat wheras an edothermic rxn, it is gaining heat, thus it looks like it is going upwards.

sodium chloride is made up of sodium and chlorine, but it isn't a poisonous gas and it doesn't explode in water. explain why.

Answers

sodium chloride is a compound that is stable because its constituent elements namely chlorine and sodium have formed ionic bonds with each other and their outer energy shells are filled with 8 electrons.

Sodium on its own has 11 electrons. Two of these are in the 1st energy level, eight in the 2nd energy level and one in the 3rd energy level. This arrangement is highly unstable rendering the element sodium highly unstable and reactive. It will burst into flames immediately on exposure to air and can burn through human flesh if it comes into contact with it.

Chlorine at room temperature is a poisonous gas. It has 17 electrons in the arrangement 2:8:7 . The outermost shell has 7 electrons and so this element is fairly stable but will readily react with human lungs with fatal consequences.

So each of these two elements on their own are deadly, but when the two react together, sodium gives up its single electron on the outer energy shell to chlorine which readily accepts it and fills its outer shell to make 8 forming ionic bonds and is thus the two are completely stable and cannot explode or react in any other way because the outer shell of each of them is now filled with 8 electrons.

You have been given an orange liquid and told to describe its properties. What methods would you use to observe, measure, and describe the physical properties of this orange liquid without changing it?

Answers

From observing the liquid you can get the following information: the color, the state of matter, the smell and the fluidity [that is, does it flow freely or it is viscous in nature].
By measuring, you can get the volume of the liquid using measuring cylinder. You can also determine the temperature of the liquid at the room temperature using thermometer.

Other Questions

Why is density a characteristic property of matter?

A force that keeps objects in motion from going on forever

Please answer!!!!!!!!!!!!!

Out of sodium,rubidium,aluminum,and indium which is the most reactive metal