Answer k
Explanation: better luck
There are three bulbs powered by a battery. What will happen if the middle light burns out.
Answer:
ABC
Explanation:
A mole of carbon has the same number of atoms as a mole of beryllium.
O True
False
Answer:
False.
Explanation:
Carbon = 12
Beryllium = 9
good luck, i hope this helps :)
WILL GIVE NRAINLIEST!! NEED HELP FAST
7. (50 points) If you have 25 grams of Aluminum (Al), how many moles of hydrogen
gas (H) can you make? Show work!
How can you tell, from the drawings, that gravity is greater on Earth
than on Venus?
‼️ Physics‼️
Answer:
hi basically also also Aussie
3. Which of these statements is false?
A. Electrons have a negative charge
B. Electrons have a mass of 1 amu
C. The nucleus of an atom is positively charged
D. The neutron is found in the nucleus of an atom
the answer is B. ......
1. Which of the following best explains the motion of the box on the table?
Answer:
The box is at rest
Explanation:
not moving object
Jennifer has a mass of 60 Kg and
is accelerating down the hill at a
rate of 3 m/s/s. What is the force
acting on Jennifer?
Answer:
the force acting on Jennifer is 180 N
Explanation:
The computation of the force acting on Jennifer is shown below:
As we know that
Force = mass × acceleration
= 60 kg × 3 m/s
= 180 N
hence, the force acting on Jennifer is 180 N
We simply applied the above formula
During ANY type of phase change, which of the following is TRUE? *
1. The temperature changes
2. The energy increases
3. The energy decreases
4. The temperature stays the same
what would happen to a piece of iron if it were placed close to this device
Answer: c) it moves toward a piece of iron
Explanation:
What kind of reaction is photosynthesis?
Answer:
endothermic reaction
Photosynthesis is an endothermic reaction. This means it cannot occur without energy (from the Sun). The light required is absorbed by a green pigment called chlorophyll in the leaves.
Explanation: hope this helps u!
Answer:
Endothermic reaction I believe.
Explanation:
It can't occur without the energy from the sun. The light is absorbed by the green pigment called chlorophyll which is in the leaves of the plant.
what is a respiratory system
Answer:
Body system that helps to breathe
Explanation:
Hope this helps! follow and message me in the comments if u need more explanation!
Answer:
The respiratory system consists of the set of organs and tissues involved in the uptake of oxygen from the atmosphere and the release of carbon dioxide generated during aerobic respiration. This gas exchange is also called breathing or external respiration.
Explanation:
particles of liquids have enough energy to separate from other liquid particles true or false
Answer:
False
Explanation:
I particles have enough kinetic energy to partly overcome the force of attraction between them, matter exists as a liquid. The particles can slide past one another but not pull apart completely. This explains why liquids can change shape but have a fived volume.
How many moles of each element are in one mole of Be(OH)2? (3 points)
a. 1 mole of beryllium, 1 mole of oxygen, 2 moles of hydrogen
b. 1 mole of beryllium, 2 moles of oxygen, 2 moles of hydrogen
c. 2 moles of beryllium, 2 moles of oxygen, 2 moles of hydrogen
d. 2 moles of beryllium, 1 mole of oxygen, 1 moles of hydrogen
Answer:
b
Explanation:
Answer:
B
Explanation:
how many modern periodic table contains
Answer:
118 elements in the periotic table
Explanation:
:)
The atmosphere insulates the planet by trapping which of the following?
Solid particles
Thermal energy
Ice crystals
Wind
Answer:
The answer is thermal energy
Explanation:
What affects both deep water and surface currents in the ocean?
Answer:
These currents are on the ocean's surface and in its depths, flowing both locally and globally. Winds, water density, and tides all drive ocean currents. Coastal and sea floor features influence their location, direction, and speed. Earth's rotation results in the Coriolis effect which also influences ocean currents. -
Answer: The Coriolis effect
Explanation:
The tectonic plates float on the lower portion of Earth's crust?
Answer:
The tectonic plates comprise the bottom of the crust and the top of the Earth's mantle. There are ten major plates on Earth and many more minor ones. They float on a plastic-like part of the Earth's mantle called the asthenosphere.
Explanation:
Answer:
Yes
Explanation:
it is also called solution
Explanation:
In chemistry, a solution is a special type of homogeneous mixture composed of two or more substances. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent. ... The term "aqueous solution" is used when one of the solvents is water.
Please help me with this
Shale is a sedimentary rock that can can be metamorphosed into slate by
Which gas is given out during burning process
Answer:
Carbon dioxide
I hope it helps
#captainpower
pls make me brainliest
please answer as quick as possible
Q2. Which of the following elements is an alkali metal
A Potassium
B Chlorine
C Neon
D Krypton
Answer:
A - potassium........ M
Answer:
POTASSIUM
Explanation:
What determines the activity?
Answer:
what activity
Explanation:
are soft pretzels, (like the auntie annes ones you get at the mall) made through the process of convection, conduction or radiation? thank youuu so much if you can answer ur the best
Answer:
I believe it's radiation, but please correct me if I'm wrong.
Explanation: Have a good day !
what are the good and bad effects of bacteria
Answer:
they are bacteria
Explanation:
Answer:
Good bacteria keeps you healthy by supporting your immune function and controlling inflammation. Certain types of good bacteria can also: Help your body digest food. Keep bad bacteria from getting out of control and making you sick.
Explanation:
I hope this helps and pls mark me brainliest :)
how many valence electrons are transferred from each potassium atom to nitrogen in the formation of the compound potassium nitride?
Answer:3 electrons
Explanation:
The diagram shows the structure of an animal cell.
Which number label represents the cell membrane? (5 points)
Answer:
1
Explanation:
The cell membrane is the protective, semi-permeable membrane surrounding a cell and its contents.
Answer:
I think 19 I think I don't know
please help i don’t know this at all i am in a test
HELP ASAP _is a device with a central catheter that is implanted in the subcutaneous tissue
A.Leuer lock
B.Port
C.Cannula
D.Catheter
1. How many atoms of oxygen are present in 0.04 mole NaNO3?
2. How many moles of nitrogen atoms are present in 10.5g of N2O5?
3. How many atoms of oxygen are present in 50g of Fe(H20)2(S04)3? Please answer fast
Answer:
1. 7.227x10²⁴ O atoms
2. 0.1944 mol
3. 3.18x10²³ atoms
Explanation:
1. To solve this problem we need to use Avogadro's number, which states the number of molecules that are in 1 mol of a substance:
0.04 mol NaNO₃ * 6.023x10²³ molecules/mol = 2.409x10²⁴ molecules NaNO₃There are 3 O atoms per NaNO₃ molecule, thus the answer is (3* 2.409x10²⁴) 7.227x10²⁴ atoms.
2. First we convert 10.5 g of N₂O₅ into moles, using its molar mass:
10.5 g N₂O₅ ÷ 108 g/mol = 0.0972 mol N₂O₅There are 2 N moles per N₂O₅ mol, thus the answer is (2*0.0972) 0.1944 mol.
3. First we convert grams into moles:
50 g Fe(H₂O)₂(SO₄)₃ ÷ 379.85 g/mol = 0.132 molThen we use Avogadro's number:
0.132 mol * 6.023x10²³ molecules/mol = 7.95x10²² molecules Fe(H₂O)₂(SO₄)₃There are 14 O atoms per Fe(H₂O)₂(SO₄)₃ molecule, so the answer is (7.95x10²² * 4) 3.18x10²³ atoms.
