Answer:
a) Lead
b) Below
Explanation:
a) ₂₁₀ Po⁸⁴ ⇒ α + ₂₀₈Pb⁸²
b) Acids are extremely corrosive substances, so they must be cleaned soon as possible because they can damage not only the furniture but also clothes and skin of the laboratory workers.
Before cleaning the polluted area with water, acids must be clean with towels in order to reduce the amount of acid.
The reaction between the acids and water are very explosive, they are exothermic reactions, that means that they increase the temperature of the area polluted and it can cause more damage. That's why the area must be cleaned with towel before add water.
Answer:
D. It must be testable in order to be found true or false.
APEX
According to one acid-base theory, the NH3(g) molecules act as
(1) an acid because they accept H+ ions
(2) an acid because they donate H+ ions
(3) a base because they accept H+ ions
(4) a base because they donate H+ ions
According to the Bronsted-Lowry concept of acids and bases, a base accepts protons. Here NH₃ accepts a proton to form the conjugate acid NH₄⁺. Hence, it acts as a base.
There are various theories regarding the nature of acids and bases. According Bronsted-Lowry concept of acids and bases, acids are substances which donates a proton and bases are proton accepters.
The species which is formed by donating a proton from the acid is called conjugate base of the acid and the species which is formed after a base accepts a proton is called the conjugate acid of the base.
Consider the given reaction of ammonia with water. Here water is a proton donor and thus acts as an acid whereas ammonia accepts the proton from water forming its conjugate acid NH₄⁺. Water forms its conjugate base OH-. Therefore NH₃ acts as a base in this reaction.
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A)It is made of matter and contains twenty-four molecules.
B)It is an element made of three types of atoms.
C)It is an atom made up of carbon, hydrogen, and oxygen.
D)It is a compound made of twenty-four total atoms of three different elements.
Answer:
The correct answer is D)It is a compound made of twenty-four total atoms of three different elements
Explanation:
Glucose (C₆H₁₂O₆) is a molecule (not an atom neither an element, so the options B and C are not completely correct). It is composed by three different elements (oxygen: O, carbon: C and hydrogen: H), and it has twenty-four atoms in its molecule: (6 x C) + (12 x H) + (6 x O)= 24. So, the option D is the one that best describes glucose.
C) it is made up of carbon, hydrogen, and oxygen
D) it is a compound made of twenty-four total atoms of three different elements
they are both right but I would go with D
Among He, Ne, Ar, and Kr, krypton (Kr) would be most likely to form a compound with fluorine. It's one of the heavier noble gases, which can form compounds with highly reactive elements like fluorine due to their slightly less firm hold on outermost electrons.
The elements in Group 18 are noble gases: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). These gases are known for their low reactivity because they have fully filled valence shells. However, the three heaviest noble gases - krypton, xenon, and radon - can react with fluorine to form fluorides, with xenon fluorides being the most well-researched among other noble gas compounds.
Among the options provided (He, Ne, Ar, Kr), krypton (Kr) would be the most likely to form a compound with fluorine. This is due to krypton's bigger size as it descends the periodic table, which slightly decreases the grip on its outermost electrons, making it marginally more likely to react with extremely reactive elements like fluorine.
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A fundamental object that is difficult to divide into smaller bits is known as an element. An element is a substance that cannot be broken down by non-nuclear reactions in chemistry and physics. The elements are boron and oxygen, and their numbers are 1 and 2.
A pure material known as an element is made up of just one type of atom and cannot be divided into two or more different substances. A compound is a pure substance that is created when two or more substances are mixed in a specific mass ratio.
Chemistry's fundamental building block is an atom. It is the smallest fraction of matter into which electrically charged particles cannot be released. It is also the smallest piece of substance with chemical element-like characteristics.
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True
False
TRUE
This is because your body releases more of these cells to fight the infection. However, if you have certain illnesses such as HIV or cancer, your white blood cell count can drop to very low levels. Taking medicines that weaken your immune system may reduce your WBC.
it produces antibodies to fight bacteria, viruses, and other potentially harmful invaders. Neutrophils. They kill and digest bacteria and fungi. They are the most type of white blood cells and are the first line of defense in the event of an infection.
Adults have a low white blood cell count of less than 4,000 cells per microliter of blood. Low white blood cell counts can be an indicator of certain medical conditions, including lupus, rheumatoid arthritis, vitamin deficiency, or side effects of cancer treatment.
Learn more about WBC here:brainly.com/question/9332702
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