All categories

3 years ago

ANSWER THIS PLEASE I HABE 5 minutes left.........

Chemistry

1 answer:

Ierofanga [76]3 years ago

5 0

Answer:The trace examiner may also be able to help investigators determine a possible ... help the investigator find possible suspects and other areas in which a crime took place. The Utah Bureau of Forensic Services offers analysis in Paint, Fibers, Fire ... Dried paint is usually a combination of organic and inorganic materials and ...

Explanation:

You might be interested in

How many isotopes does argon have?

Nostrana [21]

Argon has 24 known isotopes.

7 0

4 years ago

What happens that causes many leaves to change color in the autumn

Alex_Xolod [135]

The pigment that turns leaves green is chlorophyll. when chlorophyll leaves the leaves the leaf will turn different colors

7 0

4 years ago

Read 2 more answers

Given the following information, what is the concentration of H2O(g) at equilibrium? [H2S](eq) = 0.671 M [O2](eq) = 0.587 M Kc =

MAVERICK [17]

Answer: The equilibrium concentration of water is 0.597 M

Explanation:

Equilibrium constant in terms of concentration is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as $K_{c}$

For a general chemical reaction:

$aA+bB\rightleftharpoons cC+dD$

The expression for $K_{eq}$ is written as:

$K_{c}=\frac{[C]^c[D]^d}{[A]^a[B]^b}$

The concentration of pure solids and pure liquids are taken as 1 in the expression.

For the given chemical reaction:

$2H_2S(g)+O_2(g)\rightleftharpoons 2S(s)+2H_2O(g)$

The expression of $K_c$ for above equation is:

$K_c=\frac{[H_2O]^2}{[H_2S]^2\times [O_2]}$

We are given:

$[H_2S]_{eq}=0.671M$

$[O_2]_{eq}=0.587M$

$K_c=1.35$

Putting values in above expression, we get:

$1.35=\frac{[H_2O]^2}{(0.671)^2\times 0.587}$

$[H_2O]=\sqrt{(1.35\times 0.671\times 0.671\times 0.587)}=0.597M$

Hence, the equilibrium concentration of water is 0.597 M

8 0

4 years ago

Breeder reactors are used to convert the nonfissionable nuclide U-238 to a fissionable product. Neutron capture by the U-238 is

m_a_m_a [10]

Answer:

Pu-239

Explanation:

Beta decay moves the element which undergoes the decay one place to the right in the periodic table since to conserve charge and being beta radiations an electron we convert a neutron into a proton and an electron. In neutron capture we increase the atomic mas by one unit. We that in mind, lets solve the question:

U-238 + ₁⁰ n ⇒ U-239 ⇒ Np -239 + ₋₁⁰β ⇒ Pu-239 + ₋₁⁰β

7 0

3 years ago

The number of particles in one mole of a substance is:

spayn [35]

Avogadros number is the answer

3 0

4 years ago