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3 years ago

Molarity is not fun... Help please!

Chemistry

1 answer:

Ainat [17]3 years ago

3 0

I believe the first one, forgive me if I’m wrong, I’m not completely sure

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Why did the Mars Climate Orbiter crash?

IRISSAK [1]

Answer:

<h3> The Mars Climate Orbiter crashed, because of a navigation error, and a futile to convert english units to metric units.</h3>

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3 years ago

If 30.5 g of 15% potassium nitrate solution are reacted to excess magnesium chloride how many grams of potassium chloride will b

Nata [24]

Here the step by step and answer

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2 years ago

Write a balanced equation for its combustion reaction.

laila [671]

<h3>Answer:</h3>

C₅H₁₂O(l)+15/2O₂(g)→5CO₂(g)+6H₂O(l)

<h3>Explanation:</h3>

The balanced chemical equation for the combustion of the hydrocarbon in question is;

C₅H₁₂O(l)+15/2O₂(g)→5CO₂(g)+6H₂O(l)

A balanced chemical equation is one in which the number of atoms of each element is equal on both sides of the equation.

In this case;

Reactant side has; 5 carbon atoms, 12 hydrogen atoms and 16 Oxygen atoms
Product side has; 5 carbon atoms, 12 hydrogen atoms and 16 Oxygen atoms

An equation is balanced by putting appropriate coefficients on reactants and products involved in the reaction.
An equation is balanced so as to obey the law of conservation of mass.

5 0

4 years ago

An alloy with an average grain diameter of 35 μm has a yield strength of 163 Mpa, and when it undergoes strain hardening, the gr

Lera25 [3.4K]

Answer:

$\sigma_y\ =210.2\ MPa$

Explanation:

Given that

d= 35 μm ,yield strength = 163 MPa

d= 17 μm ,yield strength = 192 MPa

As we know that relationship between diameter and yield strength

$\sigma_y=\sigma_o+\dfrac{K}{\sqrt d}$

$\sigma_y\ =Yield\ strength$

d = diameter

K =Constant

$\sigma_o\ =material\ constant$

So now by putting the values

d= 35 μm ,yield strength = 163 MPa

$163=\sigma_o+\dfrac{K}{\sqrt 35}$ ------------1

d= 17 μm ,yield strength = 192 MPa

$192=\sigma_o+\dfrac{K}{\sqrt 17}$ ------------2

From equation 1 and 2

$192-163=\dfrac{K}{\sqrt 17}-\dfrac{K}{\sqrt 35}$

K=394.53

By putting the values of K in equation 1

$163=\sigma_o+\dfrac{394.53}{\sqrt 35}$

$\sigma_o\ =96.31\ MPa$

$\sigma_y=96.31+\dfrac{394.53}{\sqrt d}$

Now when d= 12 μm

$\sigma_y=96.31+\dfrac{394.53}{\sqrt 12}$

$\sigma_y\ =210.2\ MPa$

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3 years ago

24 grams of magnesium metal reacts with 16 grams of oxygen gas to form magnesium oxide according to the law of conservation of m

galina1969 [7]

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4 years ago