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
anzhelika [568]
3 years ago
13

Which describes the experiments of Becquerel and the Curies?

Chemistry
2 answers:
Fofino [41]3 years ago
8 0

The correct answer is D. Becquerel showed that uranium gave off radioactivity, and the Curies discovered other radioactive elements.

Irina-Kira [14]3 years ago
3 0

Answer:

d

Explanation:

You might be interested in
2. What effect does adding a neutron have on the atom’s mass?
anyanavicka [17]
It does<span>, however, change the </span>mass<span> of the nucleus. </span>Adding<span> or removing </span>neutrons<span>from the nucleus are how isotopes are created. Protons carry a positive electrical charge and they alone determine the charge of the nucleus.</span>
7 0
3 years ago
A certain metal forms a bromide containing percent by mass. what is the chemical formula of the compound?
77julia77 [94]

Answer:

w w w . g o o g l e . c o m

Explanation:

3 0
1 year ago
a rectangular piece of aluminum foil measures 13.72 cm x 8.63 cm and has a mass of 3.1 g. Find how thick it is
Leona [35]

The two dimensions of aluminum foil are given 13.72 cm and 8.63 cm respectively with mass  3.1 g.

The density of aluminum is 2.7 g/cm^{3}. It is defined as mass per unit volume thus, volume of aluminum can be calculated as follows:

V=\frac{m}{d}

Putting the values.

V=\frac{3.1 g}{2.7 g/cm^{3}}=1.148 cm^{3}

The volume of cuboid is l\times b\times h, the length and breadth are given, height can be calculated as follows;

h=\frac{V}{l\times b}

Putting the values,

h=\frac{1.148 cm^{3}}{(13.72 cm)(8.63 cm)}=0.009695 cm

Or, approximately 9.7\times 10^{-3}cm

Therefore, thickness of aluminum foil is 9.7\times 10^{-3}cm

7 0
3 years ago
List any two types of mixtures that are not covered in the Exploration. Also mention the state
marishachu [46]

This question is incomplete because you lack the options. But it can be answered based on my knowledge.

Two types of mixture could be: homogeneous and heterogeneous

A mixture is a term that refers to the combination of two or more components joined but not chemically combined. Mixtures can be classified as follows:

  • Homogeneous: Are characterized by having a uniform texture and appearance, their components are not distinguished.
  • For example: water + grapes = wine

Homogeneous mixtures can be:

  • Solutions: The mixtures formed are characterized by being formed with components that do not react chemically with each other, but that can modify their physical properties when they become part of the solution.
  • For example: coffee + milk = Coffee

There are also Colloids, a type of mixture formed by particles of one or more substances that are dispersed in another substance called a dispersing medium.

  • For example Gelatin powder + Water = Gelatin.

They are the intermediate mixtures between homogeneous and heterogeneous.

  • Heterogeneous: Are mixtures in which it is possible to observe their components due to the discontinuity with the naked eye.
  • For example Milk + cereal = Cereal

Learn more in: brainly.com/question/24713315

7 0
3 years ago
An ion with a net charge of 2+ loses 5 electrons. What is its charge?
ahrayia [7]

Answer:

+7

Explanation:

It will become MORE positive   to  + 7

8 0
2 years ago
Other questions:
  • Please answer this<br>(science)
    7·1 answer
  • Calculate the number of moles of carbon dioxide formed when 40.0 moles of oxygen is consumed in the burning of propane. Note the
    12·1 answer
  • What is the percent CdSO4 by mass in a 1.00 m aqueous CdSO4 solution?
    5·1 answer
  • Violet light has a wavelength of 4.10 x 10^-12 m. What is the frequency?
    8·2 answers
  • Briefly describe the intermolecular forces present in your unknown
    6·1 answer
  • Substance X has a specific heat capacity that is twice as large as Substance Y. If both samples ended up at the same change in t
    6·1 answer
  • hydrogen sulphide and water molecules have the same shape. however the bond angle in water is greater than the bond angle in hyd
    6·1 answer
  • A bulldozer does 15,000 J of work lifting dirt 15 m up to get it out of a hole. How much force did the bulldozer use to accompli
    9·1 answer
  • Nitrogen - 14.0067
    10·1 answer
  • Damian places a negatively charged balloon in a magnetic field. Which direction will the balloon move?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!