Vibrations that move through the ground carrying the energy released during an earthquake are called
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They are Called Siesmic Waves. It is Number 3
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Lewis base is a substance that dissolved in water increases hydrogen ion concentration.
What is a Base?
This is a chemical substance which is slippery to touch and reacts with acids to form salt.
A lewis base is capable of donating its lone pair of electrons thereby resulting in its ability to increases hydrogen ion concentration when in water.
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A Lewis base is a substance that donates electrons to form a covalent bond. Therefore, option B is correct.
What is a Lewis base?
A Lewis base is a type of molecule or ion that has a pair of electrons. It can donate electrons to another atom or molecule to form a chemical bond. The concept of Lewis bases was introduced by the American chemist Gilbert N. Lewis in 1923, as part of his theory of chemical bonding.
In a Lewis acid-base reaction, the Lewis base (electron-pair donor) reacts with a Lewis acid (electron-pair acceptor) to form a new compound. Lewis bases are important in many chemical reactions, including acid-base reactions, coordination complexes, and redox reactions. Examples of Lewis bases include ammonia (NH3), water (H2O), and chloride ions (Cl-). Therefore, option B is correct.
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0.07 mol/L
0.0007 mol/L
0.7 mol/l
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Answer:
The molarity of a 50.0 mL solution that contains 0.0350 mol of sodium sulfate 0.7
Explanation:
Molarity is a concentration measure that indicates the amount of moles of solute that appear dissolved in each liter of the mixture.
So, the Molarity of a solution is determined by the expression:
Molarity is expressed in units ().
In this case:
- number of moles= 0.0350
- Volume=50 mL=0.05 L (1 L= 1,000 mL)
Replacing:
Molarity= 0.7
The molarity of a 50.0 mL solution that contains 0.0350 mol of sodium sulfate 0.7
tungsten
aluminum
bismuth
silicon
tellurium
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Answer:
- Boron
- Silicon
- Tellurium
Explanation:
- Elements in the periodic table are either metals, non-metals or metalloids.
- Metals are elements that react by losing electron(s) to attain an octet configuration. They occupy groups I, II and III of the periodic table and the transition metals.
- Non-metals, on the other hand, are elements that react by gaining electron(s) to attain a stable configuration. Examples include halogens and noble gases among others.
- Metalloids are elements in the periodic table that have the properties of both metals and non-metals.
- Other examples of metalloids are arsenic, tellurium, germanium and polonium.
Answer:
Boron
Silicon
Tellurium
Explanation:
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