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Alex787 [66]
4 years ago
12

Scientific knowledge is open to change as new information is discovered. Which of the following would NOT be a result of new sci

entific knowledge?
A
Scientists discover that a type of fungus on this log does not require oxygen for absorption and change the classification system.

B
Scientists publish an article that mentions the historic decline in the population of blue stain fungi.

C
Scientists classify a recently discovered bacterium living on this log using generally accepted naming procedures.

D
Scientists discover a bacterium living on this log that is multicellular and revise their classification
Chemistry
1 answer:
amid [387]4 years ago
4 0
B would be the answer
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Classify each chemical reaction:
I am Lyosha [343]

Answer:

1) combustion

2) double replacement

3) combination

4) combustion

Explanation:

The combustion of a compound refers to the reaction of that compound with oxygen to produce heat and light. In reactions (1) and (4) above, ethanol and methane reacted with oxygen to yield carbon dioxde and water. This is a combustion reaction.

Reaction(2) is a double replacement reaction because the both cations exchange their anion partners in the product.

Reaction (3) is a combination reaction. It involves the joining of two elements to form a new compound.

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3 years ago
An ordered list of chemical substances is shown. Chemical Substances 1 CuO 2 O2 3 CO2 4 NO2 5 Fe 6 H2O Which substances in the l
a_sh-v [17]

Answer:

reactants: 2 O2

products: 3 CO2, 4 NO2, 6 H2O

Explanation:

In a combustion, a combustible material, which generally is composed of C, H, O, N, and S, is combusted, that is, react with oxygen after a spark was produced; obtaining fire, heat and subproducts, including ashes and gases.

Oxygen is always one of the reactants of a combustion.

If Nitrogen was present in the combustible, NO2 (or other nitrogen oxides) will be produced.

If Carbon was present in the combustible, CO2 will be produced (also CO can be produced).

If Hydrogen was present in the combustible, H2O will be produced.

7 0
3 years ago
Write a net ionic equation to show how quinoline, c9h7n, behaves as a base in water.
Natalija [7]

Quinoline, C_{9}H_{7}Nacts a Bronsted-Lowry base as it can accept a proton, H^{+}from water to form the conjugate base, C_{9}H_{7}NH^{+}. This reaction can be represented as,

C_{9}H_{7}N(aq)+H_{2}O(l) C_{9}H_{7}NH^{+}(aq)+OH^{-}(aq)

Here in the reaction, the weak base quinoline accepts a proton H^{+}from water to form the conjugate base of quinoline, C_{9}H_{7}NH^{+} and hydroxide ion, OH^{-}

Therefore the net ionic equation to show the basic nature of quinoline in water is,

C_{9}H_{7}N(aq)+H_{2}O(l) C_{9}H_{7}NH^{+}(aq)+OH^{-}(aq)

4 0
3 years ago
True or False, The Troposphere is Earth's atmospheric layer where weather occurs.
Lilit [14]

Answer:

True

Explanation:

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3 years ago
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Molodets [167]

Answer:

Polar  

Step-by-step explanation:

Electronegativity increases from <em>left to right</em> in the Periodic Table.

Cl is further right than C (both tinted pink) in the portion of the Periodic Table below.

Cl is <em>more electronegative</em> than C, so the Cl has a partial negative charge and the C has a partial positive charge.

The C-Cl bond is polar.

5 0
3 years ago
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