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Olin [163]
2 years ago
12

8. __H2 + __O2-> __H2O

Chemistry
1 answer:
Rus_ich [418]2 years ago
8 0

Anser:

Explanation:

hope this helps

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Which volume of 2.0M NaOH(aq) is need to completely neutralize 24 milliliters of 1.0M HCl(aq)?(1) 6.0mL (2) 12mL (3) 24mL (4) 48
krek1111 [17]
The answer is (2) 12mL. The reaction equation is NaOH + HCl = NaCl + H2O. So the mol number of NaOH is equal to HCl. The concentration of NaOH is twice of HCl so the volume of HCl is twice of NaOH.
5 0
3 years ago
How many valence electrons does a helium atom have? what is the formula of the ion formed when potassium achieves noble-gas elec
OlgaM077 [116]

> How many valence electrons does a helium atom have?

The electron configuration of Helium is simply 1s2. We see that its outermost shell is the s shell and it contains 2 electrons, therefore the number of valence electrons is also 2.

 

> What is the formula of the ion formed when potassium achieves noble-gas electron configuration?

Potassium has a electron configuration of [Ar] 4s1. To have an electron configuration of only [Ar] which is a noble gas, the one electron from 4s1 should be removed, hence:

<span>K+</span>

3 0
3 years ago
Most of the sulfur used in the United States is chemically synthesized from hydrogen sulfide gas recovered from natural gas well
galben [10]

Answer:

0.21\ \text{kg/s}

Explanation:

P = Pressure = 0.48\ \text{atm}=0.48\times 101325\ \text{Pa}

V = Volume = 450\ \text{L/s}=450\times 10^{-3}\ \text{m}^3/\text{s}

R = Gas constant = 8.314\ \text{J/mol K}

T = Temperature = (264+273.15)\ \text{K}

The reaction is

2H_2S+3O_2\rightarrow 2SO_2+2H_2O

From ideal gas equation we have

PV=nRT\\\Rightarrow n=\dfrac{PV}{RT}\\\Rightarrow n=\dfrac{0.48\times101325\times 450\times 10^{-3}}{8.314\times (264+273.15)}\\\Rightarrow n=4.9\ \text{mol}

Moles of SO_2 produced is

\dfrac{2}{3}\times 4.9=3.267\ \text{moles}

Molar mass of SO_2 = 64.066 g/mol

Production rate is

3.267\times 64.066=209.3\ \text{g/s}=0.21\ \text{kg/s}

The rate at which sulfur dioxide is being produced 0.21\ \text{kg/s}.

3 0
2 years ago
What important discovery did Ernest Rutherford make?
EleoNora [17]

Answer:

D if im pretty sure

Explanation:

In 1909 he began experiments that were to change the face of physics. He discovered the atomic nucleus and developed a model of the atom that was similar to the solar system.

7 0
3 years ago
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Bases dissolve _____ and _____. 1. sugars 2. fats 3. oils or 4. proteins
geniusboy [140]

Answer:due to principle "like dissolve like" as base is electronegativty it may dissolve with protein at it's isoelectronic point

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