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
blsea [12.9K]
3 years ago
9

please help me I am begging you.. )))): PLEASE HELP ME ~~~~~~~~~~~~~~~~~~~~~~ A football player experiences acute pain in his kn

ee. Which of the following methods can a doctor use to diagnose the reason for the pain? --_-_-____- A.) Use infrared radiation from warm objects to look inside the knees. B.) Use radio waves emitted by radioactive substances to look at bones. C.) Use radiations emitted by very hot objects to penetrate the skin and bones. D.) Use x‒ray radiation to see if there are any fractured bones.
Chemistry
2 answers:
Eddi Din [679]3 years ago
8 0

Answer:

d Use x‒ray radiation to see if there are any fractured bones.

Rufina [12.5K]3 years ago
6 0

Answer:

D. Use x-ray radiation to see if there are any fractured bones.

Explanation:

The football player may have fractured a bone while he was practicing or playing, so it is best for the doctor to check if the player broke his bone or fractured it.

You might be interested in
What is the volume, in milliliters, of 6.60 g of acetone?
UkoKoshka [18]
8.40 ml. I think that is right.
7 0
3 years ago
Read 2 more answers
the 89.5kg boulder begins rolling down the 35.2m hill with a speed of 5.43m/s. Calculate the kinetic energy
galben [10]
<h3><u>Answer;</u></h3>

<u>  = 1319.45 Joules </u>

<h3><u>Explanation;</u></h3>

Kinetic energy is the energy possessed by a body in motion;

It is given by the formula; 1/2mv², where m is the mass of the body and v is the velocity.

mass = 89.5 kg and v =5.43 m/s

Therefore;

Kinetic energy = 1/2 × 89.5 × 5.43 ²

                      <u>  = 1319.45 Joules </u>

8 0
4 years ago
Rubidium and cesium have similar chemical
yawa3891 [41]
<span>Rubidium and cesium have similar chemical properties because in the ground state the atoms of both elements each have one electron in the outermost shell. The correct option is A. The two elements belong to group one of the periodic table; all elements in this group have only one electron in their outmost shell which they easily give away to other elements during chemical reactions in order to attain octet structure.</span>
8 0
3 years ago
Suppose 650 mL of hydrogen gas are produced through a displacement reaction involving solid iron and sulfuric acid, H2SO4, at ST
scoray [572]

Answer:

                      4.415 g of FeSO₄

Explanation:

                   The balance chemical equation for given single replacement reaction is as follow;

                                  Fe + H₂SO₄ → FeSO₄ + H₂

Data Given;

                  Volume =  650 mL  =  0.65 L

                  Density at STP =  0.08988 g/L

                  Mass = Density × Volume = 0.08988 g/L × 0.65 L = 0.0584 g

Step 1: <u>Calculate Moles of H₂ as;  </u>

                  Moles  =  Mass / M.Mass

                  Moles  =  0.0584 g / 2.01 g/mol

                  Moles  =  0.0290 mol of H₂

Step 2: <u>Find out moles of FeSO₄ as;</u>

According to balance chemical equation,

            1 mole of H₂ is produced along with  =  1 mole of FeSO₄

So,

   0.0290 moles of H₂ will be produced along with  =  X moles of FeSO₄

Solving for X,

                    X  =  0.0290 × 1 mol / 1 mol

                    X =  0.0290 moles of FeSO₄

Step 3: <u>Calculate mass of FeSO₄ as;</u>

                   Mass  =  Moles × M.Mass

                   Mass  =  0.0290 mol × 151.90 g/mol

                   Mass  =  4.415 g of FeSO₄

4 0
3 years ago
You need to make an aqueous solution of 0.215 M aluminum bromide for an experiment in lab, using a 300 mL volumetric flask. How
Karo-lina-s [1.5K]

Answer:

We have to add 17.2 grams of aluminium bromide

Explanation:

Step 1: Data given

Molarity of the aluminum bromide solution = 0.215 M

Volume = 300 mL = 0.300 L

Molar mass aluminium bromide = 266.69 g/mol

Step 2: Calculate moles Aluminium bromide

moles AlBr3 = volume * molarity

Moles AlBr3 = 0.300 L * 0.215 M

Moles AlBR3 = 0.0645 moles

Step 3: Calculate mass aluminium bromide

Mass aluminium bromide = moles AlBr3 * molar mass AlBr3

Mass aluminium bromide = 0.0645 moles * 266.69 g/mol

Mass aluminium bromide = 17.2 grams

We have to add 17.2 grams of aluminium bromide

3 0
3 years ago
Other questions:
  • The chemical combination of two or more different atoms in fixed amounts is called a(n)
    5·2 answers
  • In the following structure where A and B represent two different elements, the valency of A is ________ and B is ________. Eleme
    10·1 answer
  • Why evaporation always occurs at the surface?
    9·1 answer
  • The first record of the scientific method being used was approximately
    10·1 answer
  • Carbon dioxide is commonly found as a solid (dry ice) or a gas (carbon dioxide gas). Jeff's teacher asked him to draw models to
    7·2 answers
  • How many unpaired electrons are in the following complex ions?
    12·1 answer
  • What is the local, day-by-day changes in the atmoshpheres condition called? A. climate B. weather C. temperature D. precipitatio
    12·1 answer
  • How many grams of KNO3 must be dissolved to<br> create 7.25L a 0.200M solution?
    13·1 answer
  • 2C8H18 (1) + 2502 (g) --&gt; 16CO2 (g) + 18H2O (g)
    7·1 answer
  • Identify the generic outer electron configuration for the noble gases
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!