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
Alik [6]
3 years ago
10

Which statements about subatomic particles are false? (select all that apply.) protons and electrons have charges of the same ma

gnitude but opposite sign. protons have about the same mass as neutrons. some atoms don't have any protons. protons and neutrons have charges of the same magnitude but opposite signs?
Chemistry
1 answer:
Aneli [31]3 years ago
6 0

Subatomic particles are those particles which are smaller than the atom such as electrons, protons and neutrons.

Protons are positively charged particle whereas electrons are negatively charged particle with same magnitude.

Neutrons have about the similar mass as protons but without any electric charge (neutral).

The false statement for the subatomic particles are that some atoms don't have protons: All atoms contains three subatomic particles. Every atom must have protons otherwise atom doesn't exist.

The another false statement for the subatomic particles that the protons (positively charge) and neutrons (neutral) have charges of the same magnitude.

You might be interested in
Worth 47 POINTS!!!
Elena-2011 [213]

Photosynthesis requires energy, making it an endothermic reaction. Light, generally sunlight, is the source of this energy. The process converts the sun’s electromagnetic energy into chemical energy, which is then stored in chemical bonds in the plant. Sunlight is the primary source of energy on the surface of Earth.

4 0
3 years ago
One crystalline form of silica (SiO2) has a cubic unit cell, and from X-ray diffraction data it is known that the cell edge leng
tigry1 [53]

Answer:

There are 8Si atoms and 16 O atoms per unit cell

Explanation:

From the question we are told that:

Edge length l=0.700nm=>0.7*10^9nm

Density \rho=2.32g/cm^3

Generally the equation for Volume is mathematically given by

V=l^3

V=(0.7*10^9)m^3

V=3,43*10^-{22}cm

Where

Molar mass of  (SiO2) for one formula unit

M=28+32

M=60g/mol

Therefore

Density of Si per unit length is

\rho_{si}=\frac{9.96*10^{23}}{3.43*10^22}

\rho=0.29

Molar mass of  (SiO2) for one formula unit

M=28+32

M=60g/mol

Therefore

There are 8Si atoms and 16 O atoms per unit cell

6 0
3 years ago
What is the concentration of a phosphoric acid solution of a 25.00 mL sample if the acid requires 42.24 mL of 0.135 M NaOH for n
kaheart [24]
0.0760 m

do this by:

finding the moles of NaOH which will be <span>5.702 E -3 m
</span>
next find the moles of H3PO4 which will be <span>1.90 E -3 m</span><span>
calulcate </span>25 ml sample molarity = 0.07603 m, just put 0.0760<span>

</span>
8 0
3 years ago
Read 2 more answers
I need help with a questino
kipiarov [429]

Explanation:

What will the question be ?

6 0
3 years ago
Read 2 more answers
I need help as soon as possible
Pachacha [2.7K]

Answer:

D

Explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • In the reaction Ni2+ + nH2O &lt;---&gt; [Ni(H2O)n]2+, H2O is a
    6·1 answer
  • Which of these features was formed by hotspot volcanism?
    10·2 answers
  • What controls which substances can move into and out of a cell?
    15·1 answer
  • A 75 gram bar of gold is cut into three equal pieces. How does the density of each piece compare to the density of the original
    13·1 answer
  • In condensation reactions, the atoms th make up a water from what?
    11·1 answer
  • How do the physical and chemical properties of wood contribute to the function of the synthetic products made of wood?
    11·1 answer
  • How many grams of NaCl are needed to make 1.00 liter of a 3.00 M NaCl solution?
    5·1 answer
  • If you have a dozen pennies and a dozen quarters, how many coins do you have?
    13·1 answer
  • A summary about liquid
    9·2 answers
  • A. Identify which sets of quantum numbers are valid for an electron. Each set is ordered (n,ℓ,mℓ,ms).
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!