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Pani-rosa [81]
2 years ago
12

Can you please help me solve these periodic table riddles

Chemistry
1 answer:
worty [1.4K]2 years ago
4 0

Answer:

1.alleviates boredom

2.sink

3.planet Krypton

4.American-style crosswords

5.Pho U

6.Southbound - 5 a.m. to 11 a.m. Northbound - 11:15 a.m. to 11 p.m. Closed: 11 p.m. - 5 a.m.

7.Asia is the largest and most populous continent in the world, sharing borders with Europe and Africa to its West, Oceania to its South, and North America to its East.

8.Retinoids. This term is used for vitamin A compounds, such as retinol and retinoic acid. These ingredients have long been used topically to help repair sun-damaged skin and reduce fine lines and wrinkles.

9.he Sam Browne belt is named after Sir Samuel James Browne, VC. Browne began his service in India in April 1849 as Second in Command of the 2nd Regiment of Punjab Cavalry, the unit which also later took his name (22nd Sam Browne's Cavalry). ... The belt had two shoulder pieces when a pistol was added.

10.graf

11. You can recognize a genuine Guylian Sea Shell by the Guylian G- stamp on every chocolate. Their marbled and beautifully shining shell is made of a unique mix of Belgian milk, dark and white chocolate. Look at our chocolates very closely and you'll notice that not two seashells have exactly the same marbling pattern.

12.Opposite of characterized by economy and good management of money and resources. spendthrift. wasteful.

13.In the meantime, it's believed that the planet's total helium supply is running dry. If our supply ran out, it could spell the end of MRI testing, LCD screens and birthday-party balloons. Or it could make all of those things much more expensive.

14.Beryllium is unique in both the diversity of its portfolio and the patience with which it invests. With only a single investor to satisfy

15.Mickey Mouse. Pluto is a cartoon character created by The Walt Disney Company. He is a yellow-orange color, medium-sized, short-haired dog with black ears. Unlike most Disney characters, Pluto is not anthropomorphic beyond some characteristics such as facial expression. He is Mickey's pet.

16.Elemental Manipulation is a branch of magic and spells that, like it suggests, involves the four elements: Earth, Air, Fire and Water. This is the only type of magic Wizards could use during the Wizard Competition.

17.Examples include the Beatles, an intentional misspelling of "beetles", the Byrds, and Led Zeppelin, in which "led" was deliberately misspelled to make clear it is pronounced /lɛd/ (as in the metal lead) rather than the other pronunciation of "lead", /liːd/.

18.Name of a goofy convict - Silicon - Si. 14. Mr. Mony's enemy - Antimony - Sb. 15. What you do to flowers - Platinum - Pt.

19.Sophia Rose Stallone is the oldest sister being born in Miami, Florida, on August 27, 1996 which makes her 24. Middle sister Sistine Rose Stallone, 22, was born in Los Angeles, California, on June 27, 1998. ... The sisters also have two half-brothers from dad Sylvester's first marriage.

Explanation:

You might be interested in
a solid sample of oil is warmed until it turns into a liquid. which property of the oil will decrease?
raketka [301]

  I think the answer is it turnes into a gas. Hope it helps! :) Asnwer is density.

4 0
3 years ago
How many formula units of sodium chloride (NaCl) may theoretically be produced from 13.0 g FeCl3?
algol [13]

Answer:

1.445\times 10^{23} formula units of sodium chloride can be formed from 13.0 gram of ferric chloride.

Explanation:

Mass of ferric chloride = 13.0 g

Moles of ferric chloride = \frac{13.0 g}{162.5 g/mol}=0.08 mol

1 mole of ferric chloride has three moles of chloride ions.Then 0.08 moles of ferric chloride will have :

3\times 0.08 mol=0.24 mol of chloride

Na^++Cl^-\rightarrow NaCl

1 mole of sodium ion reacts with 1 mole of chloride ion to form 1 mole of NaCl. Then 0.24 moles of chloride ion will give:

\frac{1}{1}\times 0.24 mol=0.24 mol of NaCl

1 mole = N_A=6.022\times 10^{23} molecules/ atoms

Number of NaCl molecules in 0.24 moles :

=6.022\times 10^{23}\times 0.24=1.445\times 10^{23} molecules

1.445\times 10^{23} formula units of sodium chloride can be formed from 13.0 gram of ferric chloride.

4 0
3 years ago
Speed is the ratio of the distance an object moves from a reference point to
Vladimir [108]

The correct option is A.

Speed is the ratio of the distance an object moves from a reference point to  the amount of time it takes to travel the distance.

For a fixed distance, if the time required to travel the distance is less than the speed is high. However, if time to cover the same amount of distance is more than the speed is low. Therefore, the measurement of speed distance and time has an inverse relationship.


4 0
3 years ago
Hydrogen peroxide decomposes to water and oxygen at constant pressure by the following reaction: 2H2O2(l) → 2H2O(l) + O2(g) ΔH =
Mashcka [7]

<u>Answer:</u> The amount of heat released is -7.203 kJ

<u>Explanation:</u>

The given chemical equation follows:

2H_2O_2(l)\rightarrow 2H_2O(l )+O_2(g);\Delta H=-196kJ

To calculate the enthalpy change for 1 mole of the hydrogen peroxide, we use unitary method:

When 2 moles of hydrogen peroxide is reacted, the enthalpy of the reaction is -196 kJ

So, when 1 mole of hydrogen peroxide will react, the enthalpy of the reaction will be \frac{-196}{2}\times 1=-98kJ

  • To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Given mass of hydrogen peroxide = 2.50 g

Molar mass of hydrogen peroxide = 34 g/mol

Putting values in above equation, we get:

\text{Moles of hydrogen peroxide}=\frac{2.50g}{34g/mol}=0.0735mol

  • To calculate the heat of the reaction, we use the equation:

\Delta H_{rxn}=\frac{q}{n}

where,

q = amount of heat released

n = number of moles = 0.0735 moles

\Delta H_{rxn} = enthalpy change of the reaction = -98 kJ/mol

Putting values in above equation, we get:

-98kJ/mol=\frac{q}{0.0735mol}\\\\q=(-98kJ/mol\times 0.0735mol)=-7.203kJ

Hence, the amount of heat released is -7.203 kJ

8 0
3 years ago
If the reactants of a reaction have ab initial mass of 25 grams what is the mass of the product?
Studentka2010 [4]

Answer:

It remains the same

Explanation:

The law of conservation of mass states that in a chemical reaction, the total mass of reactants is equal to the total mass of products. For example, the mass of sodium plus the mass of chlorine that reacts with the sodium equals the mass of the product sodium chloride.

8 0
2 years ago
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