CHEMISTRY HIGH SCHOOL

How many grams of potassium chloride are produced if 25g of potassium chlorate decompose.

Answers

Answer 1
Answer:

Answer:15 g KCl

Explanation: 2KClO3->2KCI+3O2
Answer 2
Answer:

Answer:

2.05

Explanation:

Related Questions

A solid compound in a sealed container was kept at a very low temperature in a freezer. When placed at room temperature, the substance quickly turned into a liquid. This compound is most likely which of the following?a.an ionic compound because it has a low boiling point b. a covalent compound because it has a low boiling point c.an ionic compound because it has a low melting point d.a covalent compound because it has a low melting point
PLEASE HELPPPPP Antimony exists naturally as 2 isotopes. Antimony-121 has a mass of 120.9038 amu and an abundance of 57.30%. Determine the mass of the other isotope, antimony-123 knowing the average atomic mass of the element is 121.80 amu.
Is elemental phosphorus dull or high luster?
Jello has a density of 1.14 g/mL. A box of Jello makes 475 mL of Jello and has 13 g of sugar. Determine the % m/m of sugar in the Jello. (Hint: d=m/v) ​
A gas occupying a volume of 381 mL at a pressure of 5 mmHg is allowed to expand until the pressure reaches 589 mmHg. What is the final volume in mL?

Suppose that you measure a pen to be 10.5 cm long. Convert this to meters.

Answers

If the pen is 10.5cm long, it is 0.105 meters. This can be worked out by considering that there are 100cm's in 1 meter, so you need to divide 10.5 by 100. You then move the decimal place 2 places to the right (because of the two zeros), which leads you to your answer of 0.105.

A pen measuring 10.5 cm long is equivalent to 0.105 meters.

Further Explanation

Length  

  • Length refers to a measurement of distance. It is the distance between two points.

S.I units  

  • The S.I. units of lengths. However, length can be measured using other units such as millimeters, centimeters, kilometers, etc.

Metric system unit of measurement  

  • It is a system of measurement that uses units such as gram, liter, and meter to measure mass, capacity and length respectively.
  • This system measures length based on meters, such that all the other units of lengths are based on an inter-conversion of units in meters.

Conversion of units measuring length

1 centimeter = 10 millimeters  

1 meter = 100 centimeters  

1 meter = 1000 millimeters  

1 kilometer = 1000 meters  

1 kilometer = 1000000 centimeters, and so forth.

Conversion of larger units to small units  

  • To convert larger units of measurement to smaller units we multiply we multiply the number of larger units by the appropriate conversion factor.

Conversion of smaller units to larger units

  • When converting smaller units of measurements to larger units of measurements we divide the number of smaller units by the appropriate factor.
  • For example, to convert cm to m, we divide the number of cm by 100.

In the question;

The pen measures 10.5 cm  

But, 1 meter = 100 centimeters

Thus;

10.5 cm will be equivalent to;

= 10.5 cm/100 cm  

= 0.105 meters

Therefore, a pen measuring 10.5 cm in length is equivalent to 0.105 meters.

Keywords: Length, meters, centimeters, metric unit system  

Learn more about:  

Level: Middle school  

Subject: Mathematics  

Topic: Metric system of measurements  

Sub-topic: Units of measuring length  

Which of the following is least likely to form bonds? helium hydrogen nitrogen oxygen

Answers

Answer: Helium is least likely to form bonds.

Explanation:

Helium has the electronic configuration 1s^(2). As the 1s sub-shell is completely filled so there is no need for helium to form bonds with other atoms.

Whereas, nitrogen has the electronic configuration 1s^(2) 2s^(2) 2p^(3). As the p sub-shell is half filled, it has the tendency to accept more electrons. Therefore, nitrogen is more susceptible to form bonds as compared to helium.

Thus, it is concluded that helium is least likely to form bonds.
Helium as it's a nobel gas and therefore does not need to form any bonds to get a full shell of outer electrons (as its shell is already full) making it stable.

Ventifacts are created by a process of erosion called A. deflation. B. flow. C. abrasion. D. creep.

Answers

Ventifacts are created by a process of erosion called.
(D.)Abrasion
C. abrasion (by windblown particles)

Which reaction does not occur?2HF(aq) + Cl2(g) → F2(g) + 2HCl(aq)
2Na(s) + ZnF2(aq) + 2NaF(aq) + Zn(s)
O Fe(s) + CuCl2(aq) → FeCl2(aq) + Cu(s)
0 2HCl(aq) + Mg(s) → MgCl2(aq) + H2(g)

Answers

Answer: 2HF(aq)+Cl_2(g)\rightarrow F_2(g)+2HCl(aq) will not occur.

Explanation:

A single replacement reaction is one in which a more reactive element displaces a less reactive element from its salt solution. Thus one element should be different from another element.

A general single displacement reaction can be represented as :

X+YZ\rightarrow XZ+Y

a) 2HF(aq)+Cl_2(g)\rightarrow F_2(g)+2HCl(aq)

Flourine is more reactive than chlorine and hence this reaction cannot occur.

b) 2Na(s)+ZnF_2(aq)\rightarrow 2NaF(aq)+Zn(s)

Sodium is more reactive than zinc and hence the reaction will occur.

c) Fe(s)+CuCl_2(aq)\rightarrow FeCl_2(aq)+Cu(s)

Iron is more reactive than copper and hence the reaction will occur.

d) 2HCl(aq)+Mg(s)\rightarrow MgCl_2(aq)+H_2(g)

Magnesium is more reactive than hydrogen and hence the reaction will occur.

Do you think that there is a high correlation between proficiency in mathematics and proficiency in chemistry? Explain why or why not. Use details about the components of each field to support your answer.

Answers

According to the fact that they both include the reaction change of elements through different processes, there should be a nice connection between them. In math, numbers pose as an element, and in chem - elements are physical things. Both of them can change due to reaction or a formula.

What is the name of a neutral group of atoms that are held together by covalent bond (this word has 8 letters)

Answers

The word that you're looking for is either nonpolar or molecule. Both have 8 letters. A molecule is a group of atoms held together by covalent bonds, and nonpolar is used to describe a molecule in which the electrons are shared equally between the atoms. 
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