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
lyudmila [28]
2 years ago
5

A WATER WAY CONTAINS 10.3 MILIGRAMS OF IMPURITY PER GALLON OF WATER.HOW MANY MICROGRAMS OF IMPURITY ARE PRESENT PER LITER OF WAT

ER.
1 MG= 1000 MICROGRAMS
1 GAL=3.79 LITERS
Chemistry
1 answer:
Trava [24]2 years ago
6 0

I Gallon = 3.785 L 1 Mg = 1 mg gallon 3.785L. 3. The recommended adult dose of Elixophyllin®, a drug used to treat asthma, is 6.00 mg/kg of body mass. Calculate the dose in milligrams for a 112 lb person. (o oo Kg | K9 6.oong 112 15 = 3 04.7 - 3 2.20515 2.20516 my k.

Hope this answer will help you.

You might be interested in
The loops in ptolemy’s heliocentric model , and those shown on the video , are called?
Effectus [21]

Answer:

Retrograde Motion

Explanation:

The theory that the earth revolves around the Sun is called the heliocentric theory, helio meaning 'sun' and centric meaning 'in the center.

' This theory was developed in parts by different astronomers over many years, namely Aristarchus, Copernicus, Kepler, and Galileo.

The reaction from society at the time was that the heliocentric theory was not even worth talking about.

Everyone had evidence to prove that the Earth was the center because if the sun started at one point in the morning and ended at another at night, it was common sense that we were obviously the center.

Copernicus heliocentric theory or it is also named as Sun-centred theory had accepted by Galileo.

The geocentric model is also known as geocentrism.  

5 0
3 years ago
A mixture of CrBr3 and inert material is analyzed to determine the Cr content. First the mixture is dissolved in water. Then all
Masteriza [31]

Answer:

Mass% Cr = 85.5%

Explanation:

<u>Given:</u>

Mass of CrBr3 sample = 0.8409 g

Mass of the AgBr precipitate = 1.0638 g

<u>To determine:</u>

The mass percent of Cr in the sample

<u>Calculation:</u>

The reaction of CrBr3 with silver nitrate results in the precipitation of the bromide ion as silver chloride (AgBr) and Cr as soluble Cr(NO3)2

CrBr3(aq) + 3AgNO3(aq)→ 3AgBr(s) + Cr(NO3)3(aq)

Molecular weight of AgBr =187.77 g/mol

Moles of AgBr precipitated is:

Moles(AgBr)=\frac{Mass(AgBr)}{Mol.wt(AgBr)}=\frac{0.8409g}{187.77g/mol}=0.004478moles

Since 1 mole of AgBr contains 1 mole of Cl, therefore:

# moles of Cl = 0.004478 moles

At wt of Cl = 35.45 g/mol

Mass(Chloride)=moles*at.wt = .004478moles*34.45g/mol=0.1543

Mass%(chloride)=\frac{mass(chloride)}{mass(sample)}*100=\frac{0.1543}{1.0638}*100 = 14.50%

Mass%(Cr) = 100 - 14.50=85.5%

5 0
3 years ago
How many atoms are in a 0.50 g sample of helium
Mrac [35]
0.5 G is your answer for this question
3 0
3 years ago
What will be the volume of a balloon at 98 kPa if its volume is 9.65 L at 235 kPa?
OlgaM077 [116]
<span>Boyle's Law or Boyle-Mariotte's Law: Under constant temperature, the volume occupied by a given fixed mass of a gas is inversely proportional to its pressure.

Formula:
</span>\frac{ P_{1} }{ P_{2} } = \frac{ V_{2} }{ V_{1} }
Product of extremes equals product of means
P_{1} * V_{1} = P_{2} * V_{2}

Data:
P_{1} = 235\:kPa
V_{1} = 9.65\:L
P_{2} = 98\:kPa
V_{2} = ?

Solving:
P_{1} * V_{1} = P_{2} * V_{2}
235*9.65 = 98*V_{2}
2267.75 = 98V_{2}
98V_{2} = 2267.75
V_{2} =  \frac{2267.75}{235}
\boxed{\boxed{V_{2} \approx 23.14\:L}}\end{array}}\qquad\quad\checkmark
4 0
3 years ago
What is the chemical name of the compound represented by the formula Ni2O3? Use the list of polyatomic ions and the periodic tab
bearhunter [10]
The chemical name is nickel (III) oxide .
5 0
3 years ago
Read 2 more answers
Other questions:
  • In which biome are you likely to find an organism that has a white coat in winter and a light brown coat in summer? A. desert B.
    10·2 answers
  • When a clean iron nail is placed in an aqueous solution of copper(ii) sulfate, the nail becomes coated with a brownish black mat
    5·1 answer
  • If an isotope of iron (Fe) has 23 electrons, what charge does it have?
    14·1 answer
  • Why is it important to balance a chemical equation
    8·1 answer
  • I AM GIVING BRAINLIEST! PLEASEEEEE HELP I NEED HELPPP PLEASEEEE How many atoms of nitrogen in 2.0 mol of dinitrogen monoxide, N2
    5·1 answer
  • What is the percent abundance for antimony
    14·1 answer
  • Ethylene glycol, C2H6O2, is infinitely miscible (soluble) in water. It is a nonelectrolyte that is used as antifreeze. What is t
    11·1 answer
  • Can somebody help me with this please
    9·1 answer
  • Which of the following is an example of a chemical change?
    10·1 answer
  • If 8.0 g of sulfur dioxide came in contact with a cloud containing 2.2 g of oxygen, indicate the
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!