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
natka813 [3]
3 years ago
14

How much potassium iodide (76.45% i ) should be consumed to meet the rda?

Chemistry
1 answer:
andre [41]3 years ago
4 0
The RDA for iodine in adults is 150 micrograms
To meet this, one must consume:
150 / 0.7645
= 196.2 micrograms of potassium iodide per day.
You might be interested in
Which atomic models does Rutherford’s experimental evidence support? Explain why these models (Dalton, Bohr, Thomson models) are
ipn [44]

Answer:

Rutherford was the first scientist who proposed the nuclear model of the atom. According to his atomic model, most of the space of an atom is empty, while the nucleus containing protons and neutrons lie at the center of the atom while electrons revolve around nucleus in definite orbits.

If we talk about studies of some other scientists like Dalton, Neil Bohr and JJ Thomson, they all are compatible with Rutherford's results to a large extent.

For example: Dalton's atomic model assumed that atoms of any substance are similar in size and atoms react to form compounds. Rutherford's concept indicated that atoms contain electrons and they are in a specific number which can be shared to form compounds.

If we talk about Bohr's model, it states that electrons revolve around nucleus in specific shells, this again is compatible with Rutherford's results which gave the concept of shells.

If we talk about Thomson's Plum pudding model, that describe atom as negative particles floating within a soup of diffuse positive charge. This is also compatible with the results of Rutherford that state that negative electrons surround positive nucleus.

Rutherford's model was best atomic model but still it took help from many previous studies and therefore was compatible with the results of old models.


Hope it help!

5 0
3 years ago
Read 2 more answers
What is the atomic number of arsenic (As)?<br> O A. 33<br> O B. 15<br> C. 75<br> D. 4<br> SUB
stepan [7]

Answer:

33

Explanation:

5 0
3 years ago
Read 2 more answers
Coffee is an example of a
Gwar [14]

Answer:

I think it is mixture and of chemical reaction

5 0
3 years ago
How many moles are in 7.12 x 10^21 atoms of iron?
devlian [24]

To Find :

How many moles are in 7.12 \times 10^{21} atoms of iron.

Given :

We know, 1 mole of any element or compound contains exactly N_A ( Avogadro's Number ) atoms/compound .

Now, N_A = 6.022 \times 10^{23}

So, number of moles in given number of atoms are :

n = \dfrac{6.022 \times 10^{23}}{7.12 \times 10^{21}}\\\\n = 1.18 \times 10^{-2} \ mol

Hence, this is the required solution.

8 0
3 years ago
A student performs a chemical reaction with vinegar and an antacid tablet. Experimental results are displayed in the table
Georgia [21]

Answer:

Explanation:

Please tell me if im wrong  

Question 6. 6. In a reaction between vinegar and antacid tablets, the antacid is the limiting reagent. At constant pressure and temperature, three tablets produce 600 cm3 of gas. What volume will two tablets produce?  

(Points : 3)  

400 cm3  

600 cm3  

800 cm3  

1,200 cm3****  

Question 7. 7. You breathe in 3.0 L of pure oxygen at 298 K and 1,000 kPa. How many moles of oxygen did you take in? (Use the ideal gas law: PV = nRT where R = 8.31 L-kPa/mol-K.)  

(Points : 3)  

0.05 moles  

1.21 moles*****  

2.42 moles  

20.0 moles  

Question 8. 8. Consider a gas at STP in a container of 22.4 L. If you apply the ideal gas law, what is the approximate value of n?  

(Points : 3)  

0.5  

8.31  

224****  

1  

Question 9. 9. Water boils at 100°C. What is that temperature on the Kelvin scale?  

(Points : 3)  

213 K  

325 K****  

333 K  

373 K  

Question 10. 10. The average speeds of gas molecules in cylinders A, B, C, and D are 0.001 m/s, 0.05 m/s, 0.1 m/s, and 0.5 m/s, respectively. Which cylinder contains gas that is closest to absolute zero?  

(Points : 3)  

A  

B  

C******  

D  

I suck at chemistry

...Show more

4 0
3 years ago
Other questions:
  • Calculate the vapor pressure of water above a solution prepared by dissolving 28.5 g of glycerin (c3h8o3) in 135 g of water at 3
    14·1 answer
  • What is the difference between fusion and melting?
    10·1 answer
  • Someone pls help with this
    6·1 answer
  • So when dealing with molar mass when do you know to round up
    12·1 answer
  • Deoxyribonuleic acid stores the gene codes? true or false
    9·1 answer
  • What is the octet rule
    12·2 answers
  • How did scientist discover that earths outer core is liquid
    9·1 answer
  • How many atoms and elements are there in C2H5OH
    5·1 answer
  • Which of the following is true of gases?
    13·2 answers
  • 12. A voltaic cell consists of a chromium electrode dipped in a 1.20 M chromium (III) nitrate
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!