Which of the following are examples of cations? A. SO42- B. HCO3- C. Cl- D. HPO42- E. Ca2+
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According to atomic theory: a. the nucleus is positively charged. b. the nucleus contains both charged and uncharged particles. c. the electrons contribute very little to the total mass of the atom. d. the electrons are located in the atomic space outside the nucleus. e. all of these
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If 10.0 liters of h2(g) at STP is heated to a temperature of 546 K, pressure remaining constant, the new volume of the gas will be
How many electrons does calcium lose when forming an ionic bond with another ion?a. 1 b. 2 c. 3 d. 4
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covalent bonding is when electrons are shared between two elements.
molecular polarity is a little bit complicated, but I will try to explain ;)
PCl3 is an alternation on tetrahedral molecules.
It means that P has one lone pair of electrons. This pair of electrons are only attracted to the P nuclei and thus a greater freedom of motion.
This means that their orbital is bigger and this pushes the 3 Cl atoms closer together.
The angle between each Cl now is 107 and the angle between Cls and P is greater than 107.
Now, due to this shape, and also electronegativity (Cl is more electronegative than P meaning that it tends to hog the electrons they share closer to itself), PCl3 is polar. Electrons that are shared tend to flow closer towards the Cl than the P side.
Therefore, on the Cl side of the molecule it's, more negative. On the P side, it's more positive.
In the given question, bond type for the molecule is covalent bond and molecular polarity of
is polar in nature, respectively.
Polarity is caused if it has an uneven distribution of electrons, causing one end of the molecule to be slightly positive and the other end to be slightly negative.
The bond type of is covalent. Covalent bonds form when atoms share electrons to achieve a more stable electron configuration. In
, the phosphorus atom shares three of its valence electrons with three chlorine atoms to form three covalent bonds.
The molecular polarity of is polar. In
, the three chlorine atoms exert a stronger pull on the shared electrons, causing them to be slightly negative, while the phosphorus atom is slightly positive. This creates a dipole moment, making the molecule polar.
Therefore, has covalent bonds and it is a polar molecule.
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The highly reactive gas that was probably absent from the Earth's primitive atmosphere is oxygen.
The atmosphere refers to the thin layer of gas above the earth's crust. This thin layer of gases is composed of a mixture of gases. The earth's primitive form also had an atmosphere.
However, we must recall that in its primitive form the earth was mostly under reducing conditions and there was no oxygen. However, photosynthesis by plants increased the oxygen content of the earth.
Learn more: brainly.com/question/165414
I hope that helps.
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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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A. gas molecules are subject to ionic bonding
B. the separation of gas molecules is much greater than the volume they occupy
C. gases won’t explode the bag on very hot days
D. gas molecules don’t transfer excess Kinetic Energy
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The answer is; D
The reason for this is because gases are compressible . Much of the energy of the impact created when your head hits the air bad is absorbed by the gas (through compression and rarefaction) hence reducing the damage to the head in case of an accident.
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Answer is C) Transport proteins