Answers
Answer:
See below:
Explanation:
The grasshopper doesn't require an exchange of gasses (air) using a circulatory system because the gasses directly reach its cell's from the "air sacs" which spread out into tiny tubes close to each cell.
Related Questions
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
Answers
longitudinal
all sound waves are longitudinal
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
Answers
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
If you have 2.0 moles of sodium chloride (NaCl), what is its mass in grams?
Answers
Answer:
117g
Explanation:
Given parameters:
Number of moles = 2moles
Unknown:
Mass of NaCl = ?
Solution:
To solve the problem, we need to use the expression below;
Mass of NaCl = number of moles x molar mass
Molar mass of NaCl = 23 + 35.5 = 58.5g/mol
So;
Insert the parameters and solve;
Mass of NaCl = 2 x 58.5 = 117g
20 POINTS!!
Kinetic and Potential Energy
Answers
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!
Liquid or solid water that falls to the ground is called
Answers
It takes much less energy to change the temperature of oil than it does to change the temperature of water
Answers
Answer:
i think so
Explanation:
Someone please help will mark as brainliest
Answers
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:
Can someone plz help me with this plz?????
Answers
Answer:
We can't see the options so we don't know what we can put
Explanation:
Can't live without me, you wanna, but you can't, no, no, no
Think it's funny, but honey, can't run this show on your own
I can feel my body shake, there's only so much I can take
I'll show you how a real queen behaves, oh
Heres a song. Please Help Me WIth This Work
Answers
What element is this atom?
(Urgent plz help)
Answers
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.
Answers
Answer:
Here you go
Explanation:
Every organism has a unique common name.
Group of answer choices
True
False
Plz answer the test end in 20 min
Answers
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
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?
Answers
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 many molecules are present in 3HNO4?
1) 14
2) 18
3) 3
4) 4
Answers
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
Elements in a ___ on the Period Table of Elements have similar chemical characteristics and properties.
Answers
ASAP, NO TROLLS 20 points!!!!
Answers
Answer:
1.- Chemical change
2.- Because the atoms in the image are tranformed into a new molecule
3.- Yes, it does
4.- Due to the amount of atoms are the same both in products and reagents
Explanation:
Answer:
1.- Chemical change
2.- Yes it does ,because the atoms in the image are transformed into a new molecule
3.- Yes, it does because energy is not being created or destroyed
4.- Due to the amount of atoms are the same both in products and reagents
how does an electron emit light?
Answers
Answer:
by moving between defined energy levels
Which element in Period 3 has the largest atomic radius?
Answers
Answer:
sodium
Explanation:
Which model best represents a pattern?
Antenne UHF
Chaum
RTG
Master
Antenne
grand gain
DAN
REMS
RAD
SAM
Chemin
Answers
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
Answers
A car sitting at the top of a hill
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
Answers
2)A because potential energy is always at the top first
3)B because kinetic energy is when it starts to drop; so the perfect word for that is moving.
(02.03 LC)
What term is used to describe the lowest energy level of a particle? (5 points)
Answers
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.
How much energy is required to boil 65 grams of 100°C water
And then heat the steam to 150°C?
Answers
Answer:
13598 J
Explanation:
Q = m × c × ∆T
Where;
Q = amount of energy (J)
m = mass (grams)
c = specific heat capacity
∆T = change in temperature
m = 65g, specific heat capacity of water = 4.184J/g°C, initial temperature= 100°C, final temperature = 150°C
Q = 65 × 4.184 × (150 - 100)
Q = 271.96 × 50
Q = 13598 J
Hence, 13598 J of energy is required to boil 65 grams of 100°C water and then heat the steam to 150°C.
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!!!
Answers
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
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
Answers
This particle has mass but no charge.
Answers
Answer:
Neutrons
Explanation:
let me know if it is right or not:)
Is iron rusting a chemical reaction? Explain why or why not.
Answers
Answer: Yes- Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust. Iron and steel rust when they come into contact with water and oxygen – both are needed for rusting to occur. Rusting is an example of a chemical change. A chemical property describes the ability of a substance to undergo a specific chemical change. A chemical property of iron is that it is capable of combining with oxygen to form iron oxide, the chemical name of rust.
Hope this helps.... Stay safe and have a Merry Christmas!!!!!!!!!!!! :D
1. The heat absorbed when ice melts can
be measured in a unit called a
(1) torr
(2) degree
(3) mole
(4) joule
Answers
Answer:
joule
Explanation:
PLEASEEE answer correctly! I will give u 10pts and brainleist if u get it right please:) (SCIENCE)
Answers
Answer:
The answer is 2
Explanation:
when viewed from earth number 2 would be a waning gibbous
Which has the larger atomic radius Ga Or B
Answers
Answer:
Ga-135 is the largest atomic radius because B atomic radius is 85
