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2 years ago

15

(5 x 10 4) + (2.5 x 10 2) = 2 x 10 2 12.5 x 10 2 0.5 x 10 6 5 x 106

1 answer:

grin007 [14]2 years ago

4 0

Answer: Anseew 89 until the sksfd Explanation:

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SOMEONE HELP ME ANSWER FOSSIL RECORD PLS I DONT KNOW THE ANSWER I NEED TO KNOW ASAP

Gekata [30.6K]

Answer:

I don't know if this helps but here

What did whales look like million years ago?

It lived in or near estuaries about 50 to 48 million years ago. Like Pakicetus, it spent time both in and out of water, but its large feet looked more like flippers than its ancestor's longer legs. ... This five-metre-long animal had proper flippers and tiny hind legs.

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2 years ago

Which pair of elements form an ionic bond with

KATRIN_1 [288]

Answer:

Yes Both A) KCL and D) HCL are correct...

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2 years ago

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A 0.4647-g sample of a compound known to contain only carbon, hydrogen, and oxygen was burned in oxygen to yield 0.01962 mol of

Scilla [17]

Answer:

The essence including its given problem is outlined in the following segment on the context..

Explanation:

The given values are:

Moles of CO₂,

x = 0.01962

Moles of water,

$\frac{y}{2} =0.01961$

$y=2\times 0.01961$

$=0.03922$

Compound's mass,

= 0.4647 g

Let the compound's formula will be:

$C_{x}H_{y}O_{z}$

Combustion's general equation will be:

⇒ $C_{x}H_{y}O_{z}+x+(\frac{y}{4}-\frac{z}{2}) O_{2}=xCO_{2}+\frac{y}{2H_{2}O}$

On putting the estimated values, we get

⇒ $12\times x=1\times y+16\times z=0.4647$

⇒ $12\times 0.01962+1\times 0.03922+16\times z=0.4647$

⇒ $0.27466+16z=0.4647$

⇒ $z=0.01187$

Now,

x : y : z = $0.01962:0.03922:0.01187$

= $\frac{0.01962}{0.0118}:\frac{0.03922}{0.0188}:\frac{0.0188}{0.0188}$

= $1.6:3.3:1.0$

= $3:6:2$

So that the empirical formula seems to be "C₃H₆O₂".

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2 years ago

Calculate Ecell at 80 ºC for a voltaic cell based on the following redox reaction: H2(g, 1.25 atm) + 2AgCl(s) → 2Ag(s) + 2H+(aq,

iris [78.8K]

Answer:

Ecell = +0.25V

Explanation:

the half-cell reactions for a voltanic cell

cathode(reduction): 2H⁺(aq) + 2e⁻ ------- H₂(g)

anode(oxidation): 2AgCl(s) ------- 2Ag⁺(aq) + 2Cl⁻ + 2e⁻

we have the standard cell potential E⁺cell = 0.18V at 80C respectively

Q = [H⁺]/[Cl⁻]

sub for [H+] = 0.10M and [Cl-] = 1.5M

Q= 0.1M/1.5M

Q = 0.067

Ecell = E⁺cell - $\frac{0.059}{n}$ logQ

= 0.18 - $\frac{0.056}{1}$ log 0.067

0.18- 0.059(-1.174)

Ecell = +0.25V

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3 years ago

What happens to pressure as temperature increases and temperature decreases

likoan [24]

When temperature increases pressure also increases.

When temperature decreases pressure decreases.

That is why you have low tire pressure when it’s cold out

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3 years ago

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