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
Kitty [74]
3 years ago
13

A scientist has found two samples of radioactive material. The first sample has a mass of 1.0 g and an activity of 2.0 mc022-1.j

pg 109 decays per second (d/s). The second sample has an activity of 3.0 mc022-2.jpg 109 d/s. According to the Curies’ findings, what is the mass of the second sample?
1.0 g1.5 g5.0  109 g6.0  1018 g
Chemistry
2 answers:
sp2606 [1]3 years ago
6 0
Yea the answer is 1.5

Degger [83]3 years ago
4 0
1.5 g is your answer 
You might be interested in
If you need to extract a 50 ml aqueous solution with 50 ml of dichloromethane, what is the minimum size of a separatory funnel y
tatuchka [14]

The dichloromethane (DCM) has less density than water and also the polarity of water is much more than DCM. So the mixture of water and dichloromethane will always be a heterogeneous mixture. In the mixture dichloromethane will be always up of the water layer. The volume of the separatory funnel which contains the mixture of DCM and water must have to be more than the total volume of the liquids thus the volume of the funnel will be more than (50+50) = 100mL.

The caution have to consider during the separation are-

1. The separatory funnel have to shake well with lid and have to settle down for some times until the two liquid separated.

2. The lid should be open very slowly as the vapor pressure of DCM is more and it will float on the water.

3. After this the stopcock should be opened and slowly the water will come out first followed by DCM.      

7 0
3 years ago
Which block on the periodic table contains the actinide series of elements?
viktelen [127]
F BLOCK is the block on the period table that contains the actinide series of elements.

Actinide series of elements are two rows under the periodic table which include Lanthanide series and Actinide series. These are all radioactive elements and all of these are not not found in nature. All these are included in F block element.
4 0
3 years ago
Which tools collect images during space exploration? Select three options.
Brut [27]

Answer:

space tools are the one ur llooking for :)

5 0
3 years ago
Read 2 more answers
ll of the following cause mechanical weathering EXCEPT ____. a. ice c. burrowing animals b. tree roots d. carbonic acid
Novosadov [1.4K]
All of the following cause mechanical weathering EXCEPT d. carbonic acid, which causes chemical weathering. Mechanical weathering is defined as a physical process where rocks are broken down into smaller pieces through movement, abrasion, pressure, and temperature changes. Chemical weathering, on the other hand, makes use of chemical reactions to break down rocks.
4 0
3 years ago
A compound has an empirical formula of SO3 and a molecular mass of 152. What is the molecular formula?
Anettt [7]

Answer:

Molecular formula = S₂O ₆

Explanation:

Given data:

Empirical formula = SO₃

Molecular formula = ?

Molecular mass = 152 g/mol

Solution:

Molecular formula = n (empirical formula)

n = molar mass of compound / empirical formula mass

Empirical formula mass  = 80 g/mol

n = 152 g/mol / 80 g/mol

n = 2

Molecular formula = n (empirical formula)

Molecular formula = 2(SO₃)

Molecular formula = S₂O ₆

5 0
3 years ago
Other questions:
  • Use the nuclear decay reaction in the picture to answer the following question.
    7·1 answer
  • Which factor distinguishes a metallic bond from an ionic?
    12·1 answer
  • If more solute can be dissolved in a solvent, the solution is:
    13·2 answers
  • Which compound contains both ionic and covalent
    7·2 answers
  • How many total electrons are shared between two nitrogen atoms when they bond to form a diatomic nitrogen molecule?
    7·1 answer
  • How does the number of molecules in 1 mol of oxygen compare with the number of molecules in 1 mol of nitrogen?
    8·1 answer
  • When is a hypothesis useful in science?
    5·1 answer
  • Is phosphorus a pure substance or mixture
    14·2 answers
  • I'm taking boy bsf applications submit your applications here!
    7·2 answers
  • Please help ASAP
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!