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
lisov135 [29]
3 years ago
15

How many protons does Aluminum have?

Physics
1 answer:
Lorico [155]3 years ago
5 0

Answer:

The atomic number of Aluminum is "13"!

Explanation:

The 27 means the atomic mass is 27 . The number of protons plus the number of neutrons is 27. That means the number of neutrons is 27–13=14. Number of neutrons depends on the isotopic form of aluminium.

You might be interested in
Methods to determine the specific heat capacity of a substance​
Gre4nikov [31]

The heat capacity and the specific heat

5 0
3 years ago
Read 2 more answers
A certain type of bird lives in two regions of a state. The distribution of weight for birds of this type in the northern region
Annette [7]

Answer: (a) Z-score are 1 and -1.2 for northern and southern regions, respectively.

Explanation: <u>Z-score</u> is how many standard deviations a data is from the population mean or how far a data point is from the mean.

The z-score is calculated by the following:

z=\frac{x-\mu}{\sigma}

where

x is the data point

μ is population mean

σ is standard deviation

For the <u>northern</u> <u>region</u> birds:

μ = 10, σ = 3, x = 13

z=\frac{13-10}{3}

z = 1

The z-score for birds living in the northern region is 1, which means it is 1 standard deviation <em>above the mean</em>.

For the southern region:

μ = 16, σ = 2.5, x = 13

z=\frac{13-16}{2.5}

z = -1.2

The z-score for southern living birds is -1.2, meaning it is 1.2 standard deviations <em>below the mean</em>.

6 0
3 years ago
Choose all that apply. Solids, liquids, and gases can be distinguished by their:
vodomira [7]
I believe its by there shape
8 0
3 years ago
Read 2 more answers
Sunlight reflects from a concave piece of broken glass, converging to a point 34 cm from the glass. what is the radius of curvat
wolverine [178]
The rays of light coming from the Sun are parallel to each other, so when they are reflected by the concave piece of glass (which acts as a concave mirror) they converge into the focus of the mirror, which is
f=34 cm
The radius of curvature of a concave mirror is twice its focal length, so in this case it is:
r=2f = 2 \cdot 34 cm=78 cm

6 0
3 years ago
Body composition refers to:
NISA [10]
Bone, fat and muscle
3 0
2 years ago
Other questions:
  • Please help as much as you can! Thank you
    6·1 answer
  • What happens to the ball's velocity while the ball is traveling upwards?
    14·1 answer
  • Which of the following best represents a decomposition reaction?
    8·1 answer
  • How do scientists decide how they gather information
    7·1 answer
  • A 4.0 kg box is released from rest on a frictionless ramp. The box slides from the ramp onto a rough horizontal
    5·2 answers
  • The process of mitosis makes body cells which are also called_______ cells.<br> NEED DONE ASAP!!!!!
    8·2 answers
  • Rooms are fitted with ventilators to let the air move around. The phenomenon involved is:
    6·2 answers
  • Help me, i don't know the answer ​
    13·1 answer
  • What type of Psychologist was B.F. Skinner?
    13·1 answer
  • Match each space mission with the correct milestone.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!