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vesna_86 [32]
3 years ago
7

2. _Sn+ _NaOH→_NaSnO2 + _H2 3._H2SO4+ _NaCN » _HCN + _Na2SO4

Chemistry
1 answer:
Slav-nsk [51]3 years ago
6 0

Answer:

2. <u>2</u>Sn+ <u>2</u>NaOH→<u>2</u>NaSnO2 + _H2

3._H2SO4+ <u>2</u>NaCN » <u>2</u>HCN + _Na2SO4

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Which trait is most likely a result of artificial selection
ycow [4]

Answer:

Explanation:Artificial selection is distinct from natural selection in that it describes selection applied by humans in order to produce genetic change. When artificial selection is imposed, the trait or traits being selected are known, whereas with natural selection they have to be inferred. In most circumstances and unless otherwise qualified, directional selection is applied, i.e., only high-scoring individuals are favored for a quantitative trait. Artificial selection is the basic method of genetic improvement programs for crop plants or livestock (see Selective Breeding). It is also used as a tool in the laboratory to investigate the genetic properties of a trait in a species or population, for example, the magnitude of genetic variance or heritability, the possible duration of and limits to selection, and the correlations among traits, including with fitness.

4 0
3 years ago
HELP!!!!!!!!!!! *What are some of the safety concerns for Barium sulfate &amp; Barium Sulfide? Explain
Alex

BaSO₄ is relatively harmless, but BaS is highly toxic.

BaSO₄ is quite insoluble (240 µg/100 mL). It is a <em>mild irritant</em> in cases of skin contact and inhalation. However, it is <em>safe enough</em> that health professionals ask patients to drink a suspension of BaSO₄. The Ba is opaque to X-rays, so it makes the stomach and intestines more visible to radiographers.

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An H₂S concentration of 60 mg/100 mL can be <em>fatal within 30 min</em>.

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3 0
3 years ago
Can somebody plz help answer both questions correctly thank you!!
const2013 [10]

Answer:

answer #1 used throughout the world to power devices, appliances and methods of transportation utilized in daily life. To make things operate, electrical energy must be emitted from energy sources such as power plants, to enable an object to consume the power it needs to function. ((if you want to cut it down short use the two first sentences))

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4 0
3 years ago
What is the molarity when water is added to 4 moles of sodium chloride to make 0.5 liter of solution?
loris [4]
       If    0.5 L of solution contains 4 mol
then let     1 L of solution contain  x  mol
      
       ⇒    (0.5 L) x  = (4 mol) (1 L)

                         x  = (4 mol · L)  ÷  (0.5 L)

                         x  = 8 mol

Thus the molarity of the Sodium Chloride solution is 8 mol / L   OR  8 mol/dm³. 
7 0
3 years ago
How many milligrams of a 20mg sample of cesium-137 remain after 60 years
andrey2020 [161]
Cs -137 has a half life of about 30 years. If 60 years pass, there is two half lives passed so 1/2 * 1/2= 1/4. Take 1/4 and multiply it with the mass given:
(1/4)*20mg=5mg left
5 0
3 years ago
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