Ozone is dangerous to human health only when it is found in the what?
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Answer:
A) Stratosphere
B) trosphere
C)mesosphere
D)thermosphere
Explanation:
D) thermosphere
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The digestion process starts in the _____. esophagus stomach small intestine mouth
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If the atom is neutral, then the number of protons equals the number of electrons. Therefore, there are 22 electrons in a neutral titanium atom.
Protons: 22
Neutrons: 27
Electrons: 22
Final answer:
An atom of titanium with atomic number 22 and mass number 49 contains 22 protons, 27 neutrons, and 22 electrons.
Explanation:
An atom of titanium has an atomic number of 22 and a mass number of 49. The atomic number represents the number of protons in an atom, so there are 22 protons in this titanium atom. The mass number of an atom is the sum of its protons and neutrons.
Since the atomic mass is 49, and the atomic number is 22, we can subtract the atomic number from the atomic mass to find the number of neutrons. In this case, there are 27 neutrons in the titanium atom. If the titanium atom is neutral, it means it has an equal number of protons and electrons. Since there are 22 protons, there are also 22 electrons in the atom.
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= 27 cm ³
Mass = 213 g
Density =
=
= 7.89 g / cm³
Thus answer is D.
(1) decrease in school construction
(2) increase in suburbanization
(3) decline in crime rates
(4) rise in immigration
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N2 + 3H2 -> 2NH3 (Always check if it is balanced).
Ok so we have 2kg of hydrogen conver this to grams and then to moles.
2kg -> 2000g
2000g divide by R.M.M of H2
R.M.M
2H - 2 * 1 -> 2
2000/2 - 1000 moles.
Look at the ratio of H2 to 2NH3.
We see that we get 2NH3 for every H2 therefore the ratio is 1:2.
This means that we HAVE 2000 moles of 2NH3.
At stp. we know that 1 moles = 22.4 Litres
We have 2000 moles that means that we produce 44800 litres of NH3 at stp.
2000 * 22.4 - 44800
Hope this helps :).
Final answer:
The 2.0 kg of H2 after conversion to moles will react according to the balanced chemical equation N2(g) + 3H2(g) → 2NH3(g) to yield roughly 14836 liters of NH3 at standard temperature and pressure (STP). The calculation involves using the principles of stoichiometry and the molar volume of a gas at STP.
Explanation:
The chemistry topic that your question is discussing is known as stoichiometry, which involves the mathematical relationships between reactants and products in a chemical reaction. In this case, we're looking at the reaction of nitrogen gas (N2) with hydrogen gas (H2) to produce ammonia (NH3), which is described with the balanced chemical equation: N2(g) + 3H2(g) → 2NH3(g). This equation tells us that 3 moles of hydrogen react with 1 mole of nitrogen to produce 2 moles of ammonia.
Given that 1 mole of any gas occupies 22.4 liters at standard temperature and pressure (STP), and that we have 2.0 kg or 2000 g of H2, we first need to convert this mass into moles, using the molar mass of hydrogen (1.007 g/mol). So thus, 2000 g /2.014 g/mol gives us approximately 993.5 moles of hydrogen. As per the balanced equation, 3 moles of H2 yields 2 moles of NH3. Therefore, 993.5 moles of hydrogen would yield (993.5 x 2) / 3 = 662.33 moles of ammonia. Multiplying this by the molar volume at STP gives us 662.33 moles x 22.4 L/mol =14836 liters of ammonia.
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c. external conflict.
b. climax.
d. internal conflict.
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