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
MrRissso [65]
3 years ago
13

How does our DNA cause us to have physical traits?

Chemistry
1 answer:
Cerrena [4.2K]3 years ago
6 0

Answer:

jkjkjkjkjkjkjkjkjkjkjkjkjkjkjkjk

Explanation:

You might be interested in
A pentavalent cation atom has 20 and 15 neutrons as protons. Find the electron quantity and mass number respectively. (40 pts.)
balandron [24]

Answer:

C.

Explanation:

Since the mass number is the number of protons and neutrons added together, the answer is 35. Since the questions are respectively electron quantity and mass number, the only answer choice with 35 as the second choice is C, so that is the correct answer.

5 0
3 years ago
True or False: The only planet that has gravity is the Earth.
taurus [48]

Answer:

False.

Explanation:

all planets have gravity because if they didnt, the gasses and whatever makes up the planet wouldnt be pulled down to the core of the planet, and it would just be floating around in space.

6 0
3 years ago
What type of spectrum is produced when electromagnetic radiation is emitted or absorbed as electrons change energy levels in an
mina [271]

When electrons in atom interaction with light or photons one of the two process takes place:

1) they can absorb photons of a characteristic wavelength (which depends on the energy difference between two interacting atomic levels) and get excited to a higher energy level

2) or they can jump to a lower energy level and emit photons of the corresponding wavelength.

The type of spectrum produced when electrons in an atom undergo transitions to various levels by absorbing or emitting photons is termed as atomic spectrum.

5 0
3 years ago
Read 2 more answers
If your answer is a measurement, it is not correct unless _____. A)it is converted to an SI unit of measurement B)all the units
alisha [4.7K]

Answer:

A) it is converted to an SI unit of measurement

Explanation:

The SI, System International units are the fundamental units used to measure the scientific quantities.

Example of SI units are Kilogram (km) for distance, liter (l) for liquid, centimeter (cm), and meter (m) for size of the object or short distance etcetera.

SI units help to differentiate quantities from each other and without using SI unit, no one can identify the category of the quantity whether it is distance, size or volume.

Hence, the correct answer is "A) it is converted to an SI unit of measurement".

7 0
3 years ago
How many valence electrons are in an atom of strontium (Sr)? Consult the periodic table. A. 5 B. 2 C. 47.90 D. 22
Kaylis [27]

The smallest and the basic particle of a chemical element is said to be an atom. It is made up of three subatomic particles that is electrons, protons and neutrons.  The neutrons and protons are present in the nucleus of an atom whereas electrons are present in the orbits around the nucleus of the atom.  There are several shells in the orbital depending on the atomic number.  The electrons which are present in the outermost shell are said to be valence electrons.

They can be determined by the electronic configuration of the element.

The atomic number of strontium, Sr is 38. The electronic configuration of strontium, Sr is:

1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^{6}5s^{2}

From the electronic configuration it is clear that the outermost shell of strontium, Sr is 5s. So, the number of valence electrons in strontium, Sr is 2.

Hence, there are 2 valence electrons in an atom of strontium (Sr).

5 0
3 years ago
Read 2 more answers
Other questions:
  • Wich scientist is credited with developing the first scientific atomic theory
    8·1 answer
  • What was one of the original reasons the government had for creating the internet
    12·1 answer
  • If a particular ore contains 55.4 % calcium phosphate, what minimum mass of the ore must be processed to obtain 1.00 kg of phosp
    11·1 answer
  • What are the differences between boiling and evaporation
    7·1 answer
  • Consider the chemical equation.
    10·2 answers
  • Calculate the mass in grams of each sample.<br> 4.88x10^20 H2O2 molecules
    9·1 answer
  • A 110.0-mL sample of a solution that is 3.0×10−3 M in AgNO3 is mixed with a 230.0- mL sample of a solution that is 0.10 M in NaC
    15·1 answer
  • Chemical bonding explaining ​
    11·1 answer
  • Compare the modern (electron cloud) model of the atom with Bohr’s atomic model. Which of these statements describe the two model
    10·2 answers
  • A lead apron is a ________________ instrument classification of disease transmission. Fill in the blank
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!