Answer:
D.
Explanation:
Emerging infectious disease
Answer:
d
Explanation:
emerging infectious disease
(02.03 LC)
What term is used to describe the lowest energy level of a particle? (5 points)
Explanation:
Answer and Explanation: Photon is the basic unit of light. The excited state refers to the state when any specified electron gained some energy from surrounding. In the ground state, the electron carries no energy and this refers to its lowest energy level.
Elements in a ___ on the Period Table of Elements have similar chemical characteristics and properties.
AR
1. The table below lists some properties of a sample of lauric acid.
Property
Value
hf
Volume
hc
2
Mass
Boiling point
79.6 ml
70.022 g
222°C
Number of
moles
0.350
RT
Which of these is an intensive property of this sample?
Answer:
Boiling point
Explanation:
We define extensive properties as those properties that change with the amount of the substance present. These include; mass, weight, and volume.
Intensive properties, on the other hand, do not change with the amount of the substance present. They are characteristic of the substance. They include; color, melting point, boiling point, electrical conductivity, and physical state at a given temperature.
how does an electron emit light?
Answer:
by moving between defined energy levels
Someone please help will mark as brainliest
Answer:
If heart disease is suspected, we use two-dimensional doppler imaging technologies that take in-depth images of the heart. The doppler system records sound waves as they bounce off blood cells in your heart and change pitch. The blood flow shown in these images is colorized to better detect any problems.
Explanation:
Answer:
look it up it should a better answer than me
Explanation:
Every organism has a unique common name.
Group of answer choices
True
False
Plz answer the test end in 20 min
Answer true
Explanation:
Every recognized species on earth (at least in theory) is given a two-part scientific name. ... These naming rules mean that every scientific name is unique. For example, if bluegill sunfish are given the scientific name Lepomis macrochirus, no other animal species can be given the same name
Which is an example of potential energy?
Question 7 options:
A fox chasing a mouse
A bowling ball rolling towards the pins
A car sitting at the top of a hill
A kite flying in the air
What type of ion would radium (88Ra) become when forming an ionic compound, and what would the oxidation number be?
A) a cation with a +2 charge
B) a cation with a -2 charge
C) an anion with a +1 charge
D) an anion with a -1 charge
Answer:
The correct option is A
Explanation:
Radium is an atom with the atomic number of 88. It is a metal found in group 2 of the periodic table; meaning that it has two valence electrons in it's outermost shell. As a metal that wants to form an ionic compound, radium would have to lose these two valence electrons to become a divalent positively charged cation (Ra²⁺). Thus, the correct option is A
the reason two atoms would form an ionic compound instead of a covalent compound mainly depends on their
20 POINTS!!
Kinetic and Potential Energy
Answer:
When a ball is rolled up a hill, it has potential energy that can turned into kinetic energy. The kinetic energy would be the ball rolling down the hill.
Explanation:
Hope this helps!
______cells have long projections that help carry electrical messages to other cells.
O striated
O nerve
O smooth
O muscle
Answer: Nerve cells!
its the nerve cell which carry electrical message to others cell.
How many molecules are present in 3HNO4?
1) 14
2) 18
3) 3
4) 4
Answer:
2
Explanation:
If you take H and N, that is two molecules right off the bat. If you take O4, that makes 6. Take the total of all 6, and multiply it by 3, with equals 18.
3HNO4 = 18
1. The heat absorbed when ice melts can
be measured in a unit called a
(1) torr
(2) degree
(3) mole
(4) joule
Answer:
joule
Explanation:
An unknown metal with a mass of 585.6 grams, changes temperature from 46.5°C to 84.5°C when it absorbs 795J of energy. Find specific heat of the unknown metal.
Answer: So the answer would be um I dont
know the answer right now but message me later on and I will help
Explanation: The equation that relates heat (q) to specific heat (c_p) , mass (m), and temperature change (Delta{T}) is shown below.
q=c_p times m times Delta{T} The heat that is either absorbed or released is measured in joules. The mass is measured in grams. The change in temperature is given by Delta{T}= T_f - T_i , where T_f is the final temperature and T_i is the initial temperature. Step 1: List the known quantities and plan the problem .
Known
heat = q = 134 J
mass = m = 15.0 g
Delta{text{T}} = 62.7^circ text{C} - 24.0^circ text{C} = 38.7^circ text{C}
Unknown
c_p text{of cadmium}= ? text{J}/ text{g}^circ text{C}
The specific heat equation can be rearranged to solve for the specific heat.
Step 2: Solve .
c_p=frac{q}{m times Delta{T}}=frac{134 text{ J}}{15.0 text{ g} times 38.7^circ text{C}}=0.231 text{ J/g}^circ text{C}
Step 3: Think about your result .
The specific heat of cadmium, a metal, is fairly close to the specific heats of other metals. The result has three significant figures.
Since most specific heats are known, they can be used to determine the final temperature attained by a substance when it is either heated or cooled. Suppose that a 60.0 g sample of water at 23.52°C was cooled by the removal of 813 J of heat. The change in temperature can be calculated using the specific heat equation.
Delta{T}=frac{q}{c_p times m}=frac{813 text{ J}}{4.18 text{ J/g}^circ text{C} times 60.0 text{ g}}=3.24^circ text{C}
Since the water was being cooled, the temperature decreases. The final temperature is:
T_f=23.52^circ text{C} - 3.24^circ text{C}=20.28^circ text{C}
A radio station transmits to a receiving antenna. The radio wave sent is a
a.
surface wave
b.
torsional wave
c.
longitudinal wave
d.
transverse wave
longitudinal
all sound waves are longitudinal
12) Which model of the atom is thought to be true?
a. Protons, electrons, and neutrons are evenly distributed throughout the volume of
the atom.
b. The nucleus is made of protons, electrons, and neutrons.
c. Electrons are distributed around the nucleus and occupy almost all the volume of
the atom.
d. The nucleus is made of electrons and protons.
Answer:
B
Explanation:
The neucles is surrounded by electrons. Electrons occupy most of the volume of the atom.
Atomic Model:
Atoms are the smallest unit of elements, which form bonds with others. In an atom, electrons revolve around the nucleus.
The nucleus is composed of positively charged protons and neutrons. The nucleus occupies a very small part of the atom.
Electrons are negatively charged particles, they are found around the nucleus and occupy most of the part of the atom.
Therefore, The neucles is surrounded by electrons. Electrons occupy most of the volume of the atom.
To know more about Atomic Model:
https://brainly.com/question/1596638
Which element in Period 3 has the largest atomic radius?
Answer:
sodium
Explanation:
Why do nonpolar substances tend to be gases and not liquids or solids?
Answer:
Because the intermolecular interactions are weaker.
Explanation:
Nonpolar substances do not have dipole-dipole or hydrogen bond interactions, which are strong intermolecular interactions that often make the substance liquid or solid. Instead, they must rely on van der Waals forces, which are relatively weaker interactions that are often insufficient to hold the molecules together in liquid or solid form.
The magnitude of intermolecular association in nonpolar substance is much lower than the magnitude of intermolecular association in polar substances.
Polar substances are those substances in which a permanent dipole exists in the molecule. In a molecule having a permanent dipole, the electronegativity difference between the atoms bonded in the molecule is high.
As a result of this high electronegtivity difference between atoms, the molecules interact more intimately hence polar molecules tend to exist mostly as liquids and gases while nonpolar molecules having less intimate intermolecular interaction via dispersion forces exist mostly as gases.
Learn more: https://brainly.com/question/9352088
true or false, a temperature of 0°F is equal to 32°C
Answer:
false
Explanation:
Answer:true
Explanation:
Wax melts when it is heated. Which most likely describes what is true of the result of this reaction?
The bonding of the atoms is not the same before and after the change.
The wax has the same density before and after the change.
The same amount of wax exists before and after the change.
The wax cannot be changed back into a solid.
quickly help!!!
Answer:
The same amount of wax exists before and after the change.
Explanation:
Answer:
c -the same amount of wax exists before and after the change-
Explanation:
I did the quiz (edg.) :)
Some notes for you:
A physical change is a change in some of the physical properties of matter, but not in its identity.Wax melting is an energy change, and the energy change can be reversed, which means the wax cools into hard wax again. The wax didn't leave, nor did it somehow get less of it. It stays the same! :)I hope you have an amazing day, I mean it. God bless you!
john 7:37 <3
Which has the larger atomic radius Ga Or B
Answer:
Ga-135 is the largest atomic radius because B atomic radius is 85
It takes much less energy to change the temperature of oil than it does to change the temperature of water
Answer:
i think so
Explanation:
What element is this atom?
(Urgent plz help)
Which of the following are examples of chemical energy being released or stored? (2 points)
A boy eating an orange to survive
A car burning gasoline to move
The sun heating a rock
Select two answers
Science hmk due tmr morning need help!! pls answer all 3 and number which one is which for example...
1.j
2.j
3.j
This particle has mass but no charge.
Answer:
Neutrons
Explanation:
let me know if it is right or not:)
DRAW A PEDIGREE
Read the following information and ON NOTEBOOK PAPER, construct a pedigree using the symbols we went over Tuesday: Scott is married to Christa. They have 3 children, Blake (a son), Peyton (a daughter), and Ashton (a daughter). Blake is married to Allie and they have 2 children, Henry (a son) and Harper (a daughter).
When you have completed your pedigree drawing, take a picture and attach it to this assignment and submit.
Answer:
Here you go
Explanation:
A wheelbarrow has wooden handles that are 3.5 feet long. The axle on the wheel is the
fulcrum and is 0.5 feet from the end. What is the MA? You know you can probably lift 70
pounds without too much effort. How heavy of a wheelbarrow load can you lift?
Please answer
PLEASEEE answer correctly! I will give u 10pts and brainleist if u get it right please:) (SCIENCE)
Answer:
The answer is 2
Explanation:
when viewed from earth number 2 would be a waning gibbous
Can someone plz help me with this plz?????
Answer:
We can't see the options so we don't know what we can put
Explanation:
