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
Greeley [361]
3 years ago
9

Determine the number of protons, neutrons, and electrons in the following isotopes that are used in medical diagnoses: (a) atomi

c number 9, mass number 18, charge of 1− (b) atomic number 43, mass number 99, charge of 7+ (c) atomic number 53, atomic mass number 131, charge of 1− (d) atomic number 81, atomic mass number 201, charge of 1+ (e) Name the elements in parts (a), (b), (c), and (d).
Chemistry
1 answer:
il63 [147K]3 years ago
7 0

Answer:

7-c=760

Explanation:

the answer is 7-c=7698

You might be interested in
Help its rlly hard pls
Blizzard [7]

Answer:

Volume

Explanation:

Volume is the amount of space taken up or occupied by an object.

3 0
3 years ago
Read 2 more answers
An enzyme is: a. A biological reactant b. A biological product c. A biological catalyst d. a biological co-factor
vovangra [49]
It is <span>a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction.
So I think C matches the discription </span>
8 0
2 years ago
Read 2 more answers
Choose the description that matches the law of included fragments.
GREYUIT [131]

Answer:

The answer is B

Explanation:

3 0
2 years ago
When 16.35 moles of SI reacts with 11.26 moles of N2, how many moles of SI3N4 are formed
Allushta [10]

Answer:

5.450 mol Si₃N₄

Explanation:

Step 1: Write the balanced equation

3 Si + 2 N₂ ⇒ Si₃N₄

Step 2: Establish the theoretical molar ratio between the reactants

The theoretical molar ratio of Si to N₂ is 3:2 = 1.5:1.

Step 3: Establish the experimental molar ratio between the reactants

The experimental molar ratio of Si to N₂ is 16.35:11.26 = 1.45:1. Comparing both molar ratios, we can see that Si is the limiting reactant.

Step 4: Calculate the moles of Si₃N₄ produced from 16.35 moles of Si

The molar ratio of Si to Si₃N₄ is 3:1.

16.35 mol Si × 1 mol Si₃N₄/3 mol Si = 5.450 mol Si₃N₄

6 0
2 years ago
What letter represents the activation energy for the reverse reaction?
Bezzdna [24]

<u>Answer:</u> The correct answer is Option 4: U

<u>Explanation:</u>

Activation energy is defined as the energy that is given to a chemical system with potential reactants to produce products. It is represented as E_{ac}

It is represented as the energy from the reactants to the activated complex.

Reverse reaction is defined as the reaction in which the products formed become reactants and leads to the formation of reactants back.

So, here, the activation energy of the reverse reaction is the energy between the products and the activated complex, which is represented as letter U in the given graph.

Hence, the correct answer is Option 4: U

3 0
3 years ago
Read 2 more answers
Other questions:
  • B.) what fraction of a mole is 10g of clindamycin?
    10·1 answer
  • 4 Holly has an unknown substance in a beaker. She wants to determine the relative pH of the unknown substance. She places a piec
    15·2 answers
  • Which of the following is considered a STRONG electrolyte? C12H22O11 HC2H3O2 PbCl2 CH3OH NH4NO3? please explain
    15·1 answer
  • A saturated solution was formed when 5.16×10−2 L of argon, at a pressure of 1.0 atm and temperature of 25 ∘C, was dissolved in 1
    14·1 answer
  • What is the mass, in grams, of solute in 255mL of a 0.0525M solution of KMnO4 (MM =
    15·1 answer
  • Which staement best describes air pressure at high altitudes?
    15·2 answers
  • Study the electron dot diagrams for lithium, carbon, fluorine, and neon in Figure 6-1. Choose the statement that correctly ident
    7·2 answers
  • Need help asap!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    14·1 answer
  • An airplane travels with a constant velocity of 210 m/s and in the upper atmosphere where the plane is traveling there is a wind
    6·1 answer
  • A student sets up the following equation to convert a measurement.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!