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
sp2606 [1]
3 years ago
11

Which of Newton's Laws of motion requires you to have brakes on your bicycle?

Chemistry
1 answer:
Ludmilka [50]3 years ago
8 0
<span>Which of Newton's Laws of motion requires you to have brakes on your bicycle? The answer is the = 1st law</span>
You might be interested in
Do you think the video game "Minecraft" will ever die?
qwelly [4]

Answer:

No.

Explanation:

:⊃

4 0
2 years ago
Read 2 more answers
The compound cisplatin, pt(nh3)2cl2 , has been studied extensively as an antitumor agent.
Nataliya [291]

a. Elemental percent composition is the mass percent of each element in the compound.

The formula for mass elemental percent composition = \frac{mass of element}{mass of compound}   (1)

The molecular formula of cisplatin is Pt(NH_3)_2Cl_2.

The atomic weight of the elements in cisplatin is:

Platinum, Pt = 195.084 u

Nitrogen, N = 14.0067 u

Hydrogen, H = 1 u

Chlorine, Cl = 35.453 u

The molar mass of Pt(NH_3)_2Cl_2 = 195.084+ (2\times 14.0067)+(6\times 1)+(2\times 35.453) = 300.00 g/mol

The mass of each element calculated using formula (1):

- Platinum, Pt %

\frac{195.084}{300.00} \times 100 = 65.23%.

- Nitrogen, N%

\frac{2\times 14.0067}{300.00} \times 100 = 9.34%

- Hydrogen, H%

\frac{6\times 1}{300.00} \times 100 = 2.0%

- Chlorine, Cl%

\frac{2\times 35.453}{300.00} \times 100 = 23.63%

b. The given reaction of cisplatin is:

K_2PtCl_4(aq)+2NH_3(aq)\rightarrow Pt(NH_3)_2Cl_2(s)+2KCl(aq)

According to the balanced reaction, 1 mole of K_2PtCl_4 gives 1 mole of Pt(NH_3)_2Cl_2.

Now, calculating the number of moles of K_2PtCl_4 in 100.0 g.

Number of moles = \frac{given mass}{Molar mass}

Molar mass of K_2PtCl_4 = 2\times 39.0983+195.084+4\times 35.453 = 415.093 g/mol

Number of moles of K_2PtCl_4 = \frac{100 g}{415.093 g/mol} = 0.241 mole.

Since, 1 mole of K_2PtCl_4 gives 1 mole of Pt(NH_3)_2Cl_2. Therefore, mass of cisplatin is:

0.241 mole\times 300 g/mol = 72.3 g

For mass of KCl:

Molar mass of KCl = 39.0983 + 35.453 = 74.55 g/mol

Since, 1 mole of K_2PtCl_4 gives 2 mole of KCl. Therefore, mass of KCl is:

0.241 mole\times 74.55 g/mol\times 2 = 35.93 g


5 0
3 years ago
What property did mosely use to organize the periodic table?​
zhenek [66]

Answer:

nitrogen i think but not sure

Explanation:

4 0
3 years ago
Can someone please help me with this question also explain the answers I am so confused thank you.
Archy [21]

The theoretical yield of H₂S is 13.5 g.

The percent yield is 75.5 %.

<h3>What is the theoretical yield of H₂S from the reaction?</h3>

The equation of the reaction is given below:

  • FeS + 2 HCl → FeCl₂+ H₂S

Moles of FeS reacting = mass/molar mass

Molar mass of FeS = 88 g/mol

Moles of FeS reacting = 35/88 = 0.398 moles

Moles of H₂S produced = 0.398 moles

Molar mass of H₂S = 34 g/mol

Mass of H₂S produced = 0.398 * 34 = 13.5 g

Theoretical yield of H₂S is 13.5 g.

  • Percent yield = actual yield/theoretical yield * 100%

Actual yield of H₂S = 10.2 g

Percent yield = 10.2/13.5 * 100%

Percent yield = 75.5 %

In conclusion, the actual yield is less than the theoretical yield.

Learn more about percent yield at: brainly.com/question/8638404

#SPJ1

4 0
1 year ago
Jordan needs to repeat the experiment but his teacher says that he needs to improve his design in his second experiment what sho
Margarita [4]
Just add more detail in the second experiment explain every little thing.
8 0
3 years ago
Read 2 more answers
Other questions:
  • To cool foods quickly, place them
    14·1 answer
  • How many grams of iron metal do you expect to be produced when 265 grams of an 84.5 percent by mass iron (II) nitrate solution r
    9·2 answers
  • Which of the following has the least resistance to electric flow? metal
    12·1 answer
  • What is the relationship between mass and weight?
    14·1 answer
  • A metallic substance separates into different metals when heated to certain temperatures. This substance may be an
    6·1 answer
  • Express as ordinary numbers. 6.02 x 109 =
    15·1 answer
  • QUESTION: What is the main function (job) of the Nervous System?
    5·2 answers
  • Which particle has no mass and no charge?<br> O alpha<br> O beta<br> gamma<br> O<br> neutron
    10·1 answer
  • HELP PLEASEEEEE we dissolved Alka-Seltzer in water and the mass decreased about 0.13g
    11·1 answer
  • The begining of this chemical equation represents the starting materials for a chemical reaction
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!