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
Musya8 [376]
3 years ago
12

Doctors use the radioactive isotope chromium-51 to label red blood cells in the human body. Chromium-51 gives off relatively ___

___ alpha particles that can be stopped by _______ .
Chemistry
2 answers:
Airida [17]3 years ago
7 0
Alpha particles are relatively heave and can be stopped by a sheet of paper.
xz_007 [3.2K]3 years ago
6 0

Answer:

The given blanks can be filled with harmless and a sheet of paper.

Explanation:

Chromium-51 is a chromium’s radioactive isotope. It has an application in medical diagnosis, as it is used to mark RBCs for the determination of red cell volume or mass, sequestration studies, survival time, and for the determination of gastrointestinal bleeding, and is utilized to mark platelets to examine their survival.  

The chromium-51 gives off relatively harmless alpha particles, which can be even prevented by a sheet of paper. The alpha particles do not exhibit a high concentration of energy and are not very ionizing, as they possess a high mass. This makes them comparatively safer to function with.  

You might be interested in
Question 3 of 10
PIT_PIT [208]

Answer:

the moluculer formula is the answer

Explanation:

4 0
3 years ago
Someone please help i don’t have much time left
REY [17]

Answer: Energy of reactants = 30, Energy of products = 10

Exothermic

Activation energy for forward reaction is 10.

Explanation:

Exothermic reactions are defined as the reactions in which energy of the product is lesser than the energy of the reactants. The total energy is released in the form of heat and \Delta H for the reaction comes out to be negative.

Energy of reactants = 30

Energy of products = 10

Thus as energy of the product < energy of the reactant, the reaction is exothermic.

Activation energy (E_a) is the extra energy that must be supplied to reactants in order to cross the energy barrier and thus convert to products.

E_a for forward reaction is (40-30) = 10.

6 0
3 years ago
How many moles of gas occupy 98L at a pressure of 2.8atm and a temperature of 292k? and what law would you use?
algol13
Let's assume that the gas has ideal gas behavior.

Then we can use ideal gas equation,
PV = nRT

Where, P is Pressure of the gas (Pa), V is volume of the gas (m³), n is the number of moles of gas (mol), R is the Universal gas constant (8.314 J mol⁻¹ K⁻¹) and T is the temperature in Kelvin (K)

The given data for the gas is,
P = 2.8 atm = 283710 Pa
V = 98 L = 98 x 10⁻³ m³
T = 292 K
R = 8.314 J mol⁻¹ K⁻¹
n = ?

By applying the formula,
283710 Pa x 98 x 10⁻³ m³ = n x 8.314 J mol⁻¹ K⁻¹ x 292 K
                                       n = 11.45 mol

Hence,moles of gas is 11.45 mol.
8 0
3 years ago
If an ice cube is placed in a sealed container and heated until it becomes steam, what will happen to the mass of the ice?
OLga [1]
The mass will decrease because it is an gas.
4 0
3 years ago
Read 2 more answers
What’s is the answer
julsineya [31]

Answer:

The answer is the third one which is 24 (glucose)

3 0
3 years ago
Other questions:
  • What does a Stationary object line look like?
    5·1 answer
  • Which of the following types of organelles are most important in providing a cell with energy
    13·2 answers
  • Which describes the products created from fission reactions? Question 3 options:
    9·1 answer
  • What does a fluorine ion have in common with a neon and a sodium ion
    14·1 answer
  • Which of these are broken down during chemical,but not physical,changes
    5·1 answer
  • Based on Table F, which compound is least soluble in water?
    10·1 answer
  • How many liters of C3H6O are present in a sample weighing 25.6 grams?
    11·1 answer
  • CH4(9) + H2O(g) &lt;&gt; CO(g) + 3 H2(g)
    8·1 answer
  • Type the correct answer in the box. Express your answer to six significant figures.
    9·1 answer
  • Seawater is around a 3% aqueous salt solution.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!