1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
neonofarm [45]
2 years ago
14

Please help, i will mark you as brainliest​

Chemistry
2 answers:
olga nikolaevna [1]2 years ago
8 0
Hey , This photo is only a small part , you can find it on gg, search Reactivity Series , it will show all^^

Mrrafil [7]2 years ago
4 0

Answer:

The order of reactivity of metals is as follows, Potassium > Sodium > Lithium > Calcium > Magnesium > Aluminium > Zinc > Iron > Copper > Silver > Gold.

Explanation:

The reactivity of elements (metals) towards water decreases towards the right in a period. It also increases down the group. But zinc is more reactive towards water than iron. Hence the correct order is:

Iron<Zinc<Magnesium<Sodium

You might be interested in
Suppose 50.0g of silver nitrate is reacted with 50g of hydrochloric acid producing silver chloride and a mixture of other produc
docker41 [41]

Answer:

53.6 grams of silver chloride was produced.

Explanation:

AgNO_3+HCl+\rightarrow AgCl+HNO_3

Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.

This also means that total mass on the reactant side must be equal to the total mass on the product side.

Mass of silver nitrate = 50.0 g

Mass of hydrogen chloride = 50.0 g

Mass of silver chloride = x

Mass of  nitric acid = 46.4 g

Mass of silver nitrate + Mass of hydrogen chloride =

                             Mass of silver chloride + Mass of  nitric acid

[te]50.0 g+50.0 g=x+46.4 g[/tex]

x=50.0 g+50.0 g - 46.4 g = 53.6 g

53.6 grams of silver chloride was produced.

8 0
3 years ago
Balanced nuclear equation forces the alpha decay Po-210
Serjik [45]

Answer:

_{84}^{210}\text{Po} \longrightarrow \, _{82}^{206}\text{Pb} \, + \, _{2}^{4}\text{He}

Explanation:

Your unbalanced nuclear equation is:

_{84}^{210}\text{Po} \longrightarrow \, _{x}^{y}\text{Z} + \, _{2}^{4}\text{He}

The main point to remember in balancing nuclear equations is that the sums of the superscripts and the subscripts must be the same on each side of the equation.  

Then

 84 = x + 2, so x =  84 - 2 =   82

210 = y + 4, so y = 210 - 4 = 206

Element 82 is lead, so the nuclear equation becomes

_{84}^{210}\text{Po} \longrightarrow \, _{82}^{206}\text{Pb} \, + \, _{2}^{4}\text{He}

8 0
3 years ago
Why were scientists unsure about the last common ancestor between apes and humans?
nadezda [96]

Answer:

Scientists were unsure about the last common ancestor between apes and humans because fossils are so scarce, researchers do not know what the last common ancestors of living apes and humans looked like or where they originated.

Explanation:

7 0
3 years ago
BLOOD HELPS YOUR BODY TO STAY AT TEMPERATURE OF ABOUT _____C. *
Paladinen [302]

Answer:The average normal body temperature is most often said to be 98.6° F (37° C). ... One small study even suggested that in healthy older patients, body temperature ranged from 94° F to 99.6° F, with an average of 97.7° F. Several factors can lead to a lower body temperature in older people

Explanation:so the answer would be 37

7 0
3 years ago
What is somatic cell nucleus transfer??
OleMash [197]
It's just a way to create an ovum with a donor nucleus. It is done by implanting a donor nucleus (from the somatic cell) into an egg cell, or "enucleated oocyte." <span />
3 0
3 years ago
Other questions:
  • Answer questions 36, 37, and 38 For a “thanks” and more! (Please help me smarties:)
    15·1 answer
  • Here this is a clearer photo so what should I do
    5·1 answer
  • Why is the Sun's effect on tides less than the Moon's effect?
    10·2 answers
  • What particles flow through the circuit attached to a battery
    5·2 answers
  • If the initial pressure of a gas is 1.0 atm at 273k what is the new volume at 200k
    8·1 answer
  • What will happen if pressure is increased on the system?
    7·1 answer
  • How many liters of water can be made from 55.0 grams of oxygen gas and an excess of
    7·1 answer
  • These steps are followed when using the half-life of carbon-14 to determine
    15·2 answers
  • If 9 moles of P203 are formed, how many<br> moles of O2 reacted?
    9·1 answer
  • The following is the reaction showing the complete neutralization of calcium hydroxide (a base) with phosphoric acid:
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!