Answer:
35
Explanation:
Given parameters:
Atomic number of zinc = 30
Mass number of zinc = 65
Unknown
Number of neutrons = ?
Solution:
The mass number of an atom is the sum of its protons and neutrons;
Mass number = Protons + neutrons
Atomic number is the number of protons in an atom;
Atomic number = Protons
So;
Mass number = Atomic number + Neutrons
Neutrons = Mass number - Atomic number
Neutrons = 65 - 30 = 35
The number of neutrons in the atom is 35
What type of mixture is separated by effusion and condensation?
a.
Liquid
c.
Gaseous
b.
Solid
d.
Combination of liquid and solid
Answer:
c is the answer then check it out
A worker is melting samples of various metals. Which sample will require the most heating to melt?
(check upload for chart)
A.
1 kg of aluminum
B.
2 kg of nickel
C.
3 kg of silver
D.
5 kg of tin
The formula for density (D) is D = m/v, where m is mass and v is volume. What is the mass in grams (g) of a 45.0 cubic centimeters (cm³) block of silicon if the density of silicon is 2.336 grams per cubic centimeters (g/cm³)
A. the mass is 0.0519 g.
B. the mass is 19.3 g.
C. the mass is 45.0 g.
D. the mass is 105 g.
Answer:
The answer is D. The mass is 105g.
3. How do you observe stuff?
Answer:
by looking at the and researching for super long
Explanation:
[Ne] 3s^ 2 3p^ 4 can someone tell me the element
Answer:
Sulpher
Explanation:
For this type of questions; calculate the total number of electrons so that you can identify the element from the periodic table.
Neon has 10 electrons. and from 3s^2 and 3p^4 there are 6 electrons.
So the total number of electrons is 16.
The element is Sulpher from group 6 of the periodic table
sexual reproduction helps to increase
a. the number of offspring
b. genetic variation
c. genetic mutations
Answer:
a. the number of offspring would be ur answer pls make me brainliest
Which type of fault is under compression? A. Normal. B. Thrust. C. Transform. D. Strike-slip
Answer:
The answer is Thrust
What is the pi of 80,000 and 400000
Answer:
london I'm not dead -yet-
Explanation:
thank u for being there for me when no one else was
btw she visited me last night "I made sure to punch her in da nose but my fist hit the wall instead of her face so yea funnn" good luck in this life
If anyone have the answers to this plz tell me
Explanation:
hey can I please get the passage so that I can help you
what is the meaning of mass
Answer:
Mass is both a property of a physical body and a measure of its resistance to acceleration when a net force is applied.
Explanation:
If an atom has 3 protons, what is its atomic number?
Answer:
Atomic Number = 3.
Explanation:
The number of protons determines the atomic number. Basically the number of protons is the exact same as the atomic number.
Protons 3 = Atomic number 3
Hydrochloric acid and sodium hydroxide can be combined to form sodium chloride and water. Which best explains the reaction?
Answer:
Explanation:
Hydrochloric acid and sodium hydroxide can be combined in equal ratios to form sodium chloride and water. Which best explains the reaction? The total volume produced by combining hydrochloric acid and sodium hydroxide will result in the same volume of sodium chloride and water.
Which of the following best describes a function of the nervous system as
discussed in class?
to store urine
O to move limbs
to receive stimuli from inside and outside the body
to take in oxygen and transport it to the cells
Answer: The answer is to receive stimuli from inside and outside the body.
Explanation:
3.
The dimensions of a cuboid are in the ratio of 1:2:3 and its total surface area is
88m square. Find
the dimensions.
Answer:
The length of the cuboid =x=2m, breadth =2x=4m, height =3x=6m
Explanation:
Let the length of the cuboid =x, breadth =2x, height =3x
Total surface area of a cuboid =2(l×b+b×h+l×h)
Given, total surface area of the cuboid =88m^2
2( x*2x + 2x*3x + x*3x )=88m
22x^2 =88
x=2
Hence, the length of the cuboid =x=2m, breadth =2x=4m, height =3x=6m
fghgfgfgfftftftft ttcc
Answer:
fghgfgfgftftftftftft ttcc
tehee
Explanation:
Quartzite is a coarse-grained rock derived from sandstone.
Which type of rock is quartzite?
metamorphic
extrusive
sedimentary
igneous
Answer:
granoblastic metamorphic rock
Explanation:
During a scientific investigation, which step will a scientist perform first?
Answer:
you need to have a question or a problem first
ANSWER FAST PLEASE!!
Which is a true statement about a zero net force?
A zero net force causes a change to an object’s direction.
B.zero net force causes a change to an object’s speed.
C.A zero net force causes a change to an object’s acceleration.
D.A zero net force causes no change in an objects motion.
Answer:
D)a zero net force causes no change in an objects motion.
A zero net force causes no change in an object's motion. This statement is true about zero net force. Therefore, option D is correct.
What is zero net force ?An item that is originally at rest and has no net forces operating on it will stay at rest. If it is going, it will keep moving straight forward at a consistent speed. Forces are "pushes" or "pulls" on the object, and they are vector numbers, just like acceleration and velocity.
A automobile travelling at 50 mph on a highway continually has a net force of zero even though it is moving, since there is no acceleration and the speed is constant.
The total net force acting on an object as it moves at a steady speed is always zero. If you apply force, friction or another force (or several forces) will balance it out.
Thus, option D is correct.
To learn more about zero net force, follow the link;
https://brainly.com/question/16410429
#SPJ2
Where are hormones produced in animals, and how are they transported throughout the body?
A. Animal hormones are produced in endocrine glands and travel through the blood.
B. Animal hormones are produced in lymph nodes and travel through the lymphatic system.
C. Animal hormones are produced inside the bones and travel through the nervous system.
D. Animal hormones are produced in sweat glands and travel through the skin.
Answer:
Vertebrate Endocrine Glands and Hormones
Unlike plant hormones, animal hormones are often (though not always) produced in specialized hormone-synthesizing glands (shown below). The hormones are then secreted from the glands into the blood stream, where they are transported throughout the body.