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2 years ago

PLS HELP GIVING BRAINLIEST AND 100 POINTS

Chemistry

1 answer:

kondor19780726 [428]2 years ago

4 0

Air temperature and air pressure both decrease

The air pressure is low at higher altitudes. The pressure decreases up the higher altitudes. Same with temperature, as we go up the higher altitudes the temperature decreases as molecules becomes more far apart.

altitude ↑ || pressure ↓

altitude ↑ || temperature ↓

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How many protons, neutrons, and electrons are there in an atom of (a) 10B5, (b) 36Ar, (C) 85Sr38, and (d) carbon-Il?

astraxan [27]

Answer:

Here's what I get.

Explanation:

The isotopic symbol for an atom is

$\rm _{Z}^{M}A$

The atomic number (Z) is the number of protons (p) in the nucleus.

In a neutral atom, the number of electrons (e) equals the number of protons. n = e

The mass number (A) is the number of protons plus the number of neutrons (n).

A = p + n or

n = A - p

(a) $\rm _{5}^{10}B$

p = 5

e = 5

n = 10 - 5 = 5

(b) $\rm _{18}^{36}Ar$

p = 18

e = 18

n = 36 - 18 = 18

(c) $\rm _{38}^{85}Sr$

p = 38

e = 38

n = 85 - 38 = 47

(d) $\rm _{6}^{11}C$

p = 5

e = 6

n = 11 - 6 = 5

5 0

4 years ago

Determine the mass of 5.20 moles of C6H12

Vera_Pavlovna [14]

Hello!
We have the following data:

m (mass) = ?
n (number of moles) = 5.20 moles
MM (Molar mass of C6H12)
C = 6*12 = 72 amu
H = 12*1 = 12 amu
--------------------------
MM (Molar mass of C6H12) = 72 + 12 = 84 g/mol

Now, let's find the mass, knowing that:

$n = \dfrac{m}{MM}$

$5.20\:\:\diagup\!\!\!\!\!\!\!mol = \dfrac{m}{84\:g/\diagup\!\!\!\!\!\!\!mol}$

$m = 5.20*84$

$\boxed{\boxed{m = 436.8\:g}}\end{array}}\qquad\checkmark$

6 0

3 years ago

If you have a cup of water at 35 degrees Celsius, and a bath tub of water at 35 degrees Celsius which will melt the most ice and

ZanzabumX [31]

The bathtub of water would melt the most ice because it has a larger area

8 0

3 years ago

The activation energy for a reaction is the energy difference between what two components of a reaction?

lora16 [44]

Answer:

Activation Energy is the Energy that Must be Overcome/reached by Reactants for Products to be formed.

I'd go with the 2nd Option.