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
nadezda [96]
3 years ago
7

AdiffusioncoupleofweldedAandBwasgivenadiffusionannealatelevatedtemperatureandthencooledtoroomtemperature.Chemicalanalysisofthesu

ccessivelayercutparalleltotheweldinterfaceshowthatoveradistanceof5000nm,NAchangedfrom0.3to0.35.Assumethatthenumberofatomsperm3ofbothpuremetalsis9×1028.a)determinetheconcentrationgradientdnA/dx,b)ifthediffusioncoefficientatthepointinquestionatannealingtemperaturewas2×10-14m2/s,determinethenumberofAatomspersecondthatwouldpassthroughthiscross-sectionattheannealingtemperature.Neglecttheinterfacemotion.
Chemistry
1 answer:
Murljashka [212]3 years ago
8 0

Answer:

what

Explanation:

You might be interested in
What neutral element has 17 electrons an 18 neutrons?
pishuonlain [190]

Answer:

chlorine atom

A chlorine atom has 17 protons, 18 neutrons, and 17 electrons.

Explanation:

4 0
2 years ago
Read 2 more answers
Formula of <br> Al³⁺ and SO₄²⁻
Sergio039 [100]

Answer:

The formula of Al³⁺ and SO₄²⁻ is aluminum sulfate.

Explanation:

The formula for aluminum sulfate is Al₂(SO₄)₃. If we say in terms of ions. The ions are Al³⁺. It is a positive ion or the cation. Other ion is SO₄²⁻. It is sulfate ion. It is anion.

Aluminum sulphate is used in water purification and as a mordant in dyeing and printing textiles.

Hence, the formula of Al³⁺ and SO₄²⁻ is aluminum sulfate.

3 0
3 years ago
A student used standard solutions of aspirin in a FeCl3-KCl-HCl mixture to plot a graph of molarity versus absorbance for dilute
kvasek [131]

Answer:

is any thing which has mass volume and empty space

8 0
3 years ago
A client who weighs 70 kg is receiving a solution of 0.9% sodium chloride (normal saline) 500 ml with dopamine 800 mg at 5 ml/ho
nordsb [41]

The mcg/kg/minute the client is receiving is 1.904 mcg/kg/min whose weight is 70 kg.

<h3>What does mcg kg mean?</h3>

1 milligram (mg) = 1000 micrograms (mcg) or 0.001 grams (g) 1 g = 1000 mg 1 kilogram (kg) = 1000 g 1 kg = 2.2 pound (lb) 1 liter (L) = 1000 milliliters (mL)

The number of mcg/kg/minute = flow rate × concentration ÷ mass of client

Flow rate = 12 ml/hour = 12 ml/hour × 1 hr/60 min = 0.2 ml/min

Concentration = mass of dopamine/volume

where

mass of dopamine = 800 mg and

volume =  500 ml

Concentration =800 mg/500 ml

= 1.6 mg/ml

= 1.6 mg/ml × 1000 mcg/mg

= 1600 mcg/ml

mass of client = 70 kg

Calculating mcg/kg/minute

So, substituting the variables into the equation, we have

mcg/kg/minute = flow rate × concentration ÷ mass of client

mcg/kg/minute = 0.08 ml/min × 1600 mcg/ml ÷ 70 kg

mcg/kg/minute = 320 mcg/min ÷ 70 kg

mcg/kg/minute = 1.904 mcg/kg/min

Thus, the mcg/kg/minute the client is receiving is 1.904 mcg/kg/min

Learn more about mcg/kg/minute here:

brainly.com/question/4253005

#SPJ1

7 0
2 years ago
What does atomic mass on the periodic table represent?
neonofarm [45]
The atomic mass on the periodic table represents the sum of number of protons and number of neutrons.

Atomic mass = Number of protons + number of neutrons

Hope this helps!
6 0
3 years ago
Other questions:
  • What do repeated trials in an experiment allow a scientist to do?
    11·1 answer
  • A piece of metal with a mass of 159 g is placed in a 50 mL graduated cylinder. The water level rises from 20. mL to 41 mL. What
    14·1 answer
  • A solution contains an unknown mass of dissolved barium ions. When sodium sulfate is added to the solution, a white precipitate
    7·1 answer
  • A corpse discovered in the desert at 5:00 PM was found to have larvae from the blow fly species Phormia regina that had just dev
    7·1 answer
  • ccording to the Bohr model of the atom, when an electron goes from a higher-energy orbit to a lower-energy orbit, it ________ el
    7·1 answer
  • A student needs to prepare 100. mL of 0.612 M Cu(NO3)2 solution. What mass, in grams, of copper(II) nitrate should the student u
    7·1 answer
  • Which force acts an an object to move it from rest or a constant, straight-line motion?
    6·1 answer
  • Help pls anyone asap
    5·2 answers
  • Difficulty(Level:1)
    7·1 answer
  • The liquid hydrogen/oxygen rocket will burn for about 8 minutes at a rate of 90,000 gallons of liquid hydrogen per minute. The d
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!