Answers
Answer:
pretty sure they're called groups
Related Questions
Write the product for each synthesis reaction . Balance the chemical equation . a) Be+O 2 Li+Cl 2 c) Mg+N 2 d) Al+Br 2 K+O 2
Answers
Answer:
j,
Explanation:
Please help!!!
Which statement about the manufacture of aluminium by electrolysis is correct?
А Aluminium ions are oxidised to aluminium by gaining electrons.
B Aluminium is extracted from its ore hematite. .
с Molten cryolite is used to dissolve the aluminium oxide.
D Oxygen is formed at the negative electrode.
Answers
Molten cryolite is used to dissolve the aluminum oxide is correct.
What is electrolysis?
Electrolysis is a process used to split molecules by passing an electric current through a solution containing ions. It works because the ions in the solution are attracted to the opposite charge of the electrodes in the electrolysis cell. The ions travel towards the electrodes and are either removed from the solution (oxidation) or released into it (reduction). This process is used in a variety of industries, such as metals refining, wastewater treatment, and electroplating.
The process of extracting aluminum from its ore, usually bauxite, involves electrolysis. In this process, the ore is dissolved in molten cryolite and an electric current is passed through it, leading to the oxidation of aluminum ions at the anode and the reduction of oxygen at the cathode. The aluminum is then extracted as a molten metal.
Therefore, option C is the correct answer.
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The muscular system and the skeletal system work together so the body can do what?
move
pump blood
get oxygen
digest food
Answers
Answer:
Move
Explanation:
3.) Plants make food through photosynthesis, and photosynthesis takes place mostly in plant in plant leave, but when plants lose their leaves in winter, they don’t die.
This is evidence that
A. Someone gives the plant food everyday.
B. Plants store food later use.
C. Plants can use heat in the ground to make food.
Answers
Answer:
B
Explanation:
Birds' feet change slowly over time, depending on their habitat. Ptarmigans live in snowy areas and eat pine needles, twigs, and insects. Roadrunners live in deserts and plains and eat anything they can catch. Peregrine falcons live on high perches and use their talons for grasping their prey. Mallards live near water and swim and dive for food.
What is an inherited behavior or physical change that helps an organism survive and reproduce in its environment?
A. adaptation
B. variation
C. evolution
D. species
Answers
Answer:
A
Explanation:
if you were to slowly add 0.3 M NaOH to 35 ml if 0.23M HCl how many ml of NaOH solution would be needed to reach the equivalence point??
Answers
M1V1 = M2V2
M1 = 0.23 M HCl
V1 = 35 mL
M2 = 0.3 M NaOH
V2 = ?
(0.23 M)(35 mL) = (0.3 M)V2 —> V2 = 27 mL NaOH
This resource produces the most energy for the smallest amount of resources.
Which one of these is it?
Coal
Oil
Natural Gas
Biomass
Wind
Geothermal
Hydroelectric
Nuclear
Solar
Tidal
Answers
Answer:
wind
pollution free no use of resources
Wind resource produces the most energy for the smallest amount of resources. Hence option 5 is correct.
What are resources?Resources are defined as a type of physical substance, like land, air, or water, that people value and require. A resource can be classified as renewable or nonrenewable based on whether it can replace itself at the rate it is used up or whether it has a finite supply. When people cherish natural resources, they become resources themselves.
Renewable energy sources like sun and wind don't consume fuel and emit no greenhouse gases. They are much more efficient at converting energy into electricity, producing less waste and cost-saving results. With 83% of the world's electricity coming from renewable sources, hydroelectric energy is by far the most common.
Thus, wind resource produces the most energy for the smallest amount of resources. Hence option 5 is correct.
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When do scientists believe matter formed
Answers
Analyze the given diagram of the carbon cycle below.
An image of carbon cycle is shown. The sun, a cloud, two trees, one towards left and the other towards right, an animal, lake, and a factory are included. Arrow A points from the sun to the left tree. Arrow B points from the air above the clouds to the left tree. Arrow C points from the factory towards the air above the clouds. Arrow D points from the air to the lake labeled Carbonates in Water. Arrow E points from the label Dead Organism under the animal to label Fossils and Fossil Fuels. Arrow F points from the right tree to the air.
Part 1: Which process does arrow F represent?
Part 2: Explain how matter is conserved during the process.
Part 3: Justify why this process is a recycling of carbon in the carbon cycle.
Use complete sentences to explain your answer. (10 points)
Answers
Answer:
Part 1:
Arrow F represents Cellular Respiration, showing how the tree produces carbon after it has finished the process of Cellular Respiration.
Part 2:
Matter is conserved in this image because it shows the process of Photosynthesis and cellular respiration. These are both examples of The Law of Conservation of Mass. During both of these processes, the mass of the reactants is the same as the mass of the products.
Part 3:
This process shows the carbon cycle by showing how carbon transfers to many different types of matter and back again. It shows the process of cellular respiration, which produces carbon using the products of photosynthesis, which uses the carbon produced by cellular respiration. This shows a cycle because each of them depends on the other.
Can you identify a sample from a living organism by examining it under a microscope? Yes or No
Answers
Substance P is carbon.
Suggest what substances Q and R could be. Give their names.
substance Q .......................................................................................
substance R .......................................................................................
Answers
Explanation:
substance Q could be oxygen (O2)
substance R could be carbon dioxide (CO2)
Substance Q could be oxygen ([tex]O_2[/tex])
Substance R could be carbon dioxide ([tex]CO_2[/tex])
What are molecules?The smallest particle of a substance that has all of the physical and chemical properties of that substance.
There are 2 oxygen atoms in 1 molecule of oxygen. It is a di-atomic gas.
Carbon dioxide is a chemical compound composed two oxygen atoms covalently bonded to one carbon atom.
Hence, substance Q could be oxygen ([tex]O_2[/tex]). substance R could be carbon dioxide ([tex]CO_2[/tex])
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A student bends a paperclip rapidly back and forth. When he touches the point where he was
bending the paperclip, he finds that its temperature has increased. This indicates that the
atoms in that part of the paperclip have increased in what kind of energy
Answers
Answer:
conservation .
Explanation:
According to VSEPR theory, what is the bond angle of CCl4?
a. 90
b. 109.5
c. 120
d. 180
Answers
What particle revolves around the center of the atom? What is its Charge?
Answers
Answer:
Electrons, with a charge of -1.
Explanation:
The nucleus of the atom is composed of protons and neutrons.
The nucleus is where the bulk of the mass of an atom is found.
Electrons orbit the nucleus in various energy levels.
Protons have a charge of +1, neutrons have no charge, and electrons have a charge of -1.
How many milliliters are in a 30 gallon drum?
Answers
Answer:
113562 milliliters are in a 30 gallon drum
Explanation:
because you have to convert gallons into milliliters
could you put my answer as the brainist!!!!!!!
What is the chemical formula of stannic nitride?
Answers
Answer:
Stannic nitride, Sn3N4
Explanation:
What is the molar ratio between carbon dioxide to water?
2 C4H10 + 13 O2 = 8 CO2 + 10 H2O
Answers
Answer:
8:10
Explanation:
The coefficients of a balanced chemical equation give us the mole ratios. The coefficient of carbon dioxide here is 8 and water is 10.
What causes the differences in physical characteristics like hair color among people?
ООО
different versions of genes
O variations in DNA length
different numbers of chromosomes
variations in cell nucleus size
Answers
Answer:
The answer is a
Explanation:
Which of the following reactions is NOT properly classified?
(A) Synthesis - MgO + CO2 → MgCO3
(8) Decomposition - 2 Fe(OH)3 → Fe2O3 + 3 H2O
(c) Combustion - CO2 + 2 H2O → CH4 + 2 02
(D) Synthesis – 2 Na + Cl2 → 2 NaCl
Answers
HELP!! URGENT!! WILL GIVE BRAINIEST
Answers
Answer:
11. Mn (CH 3 CO 2) 2. (H 2 O) n where n = 0, 2, 4.
12. Au2O
Explanation:
Hope this helps
Balance equation Co2(CO3)3(s)=Co2O3(s)+CoO2(g)
Answers
Answer:
answer
Explanation:
explination
The element which has atomic number 17 is considered from... A. Metals B. Non-metals C. Noble gas D. No correct answer Please explain with your answer.
Answers
Answer:
B. Non-metals
Explanation:
The element with the atomic number of 17 is Cl.
Chlorine belongs to the group 7 in the periodic table. It is a non metal.
Correct option: B. Non-metals
Nitrogen is an element. What is the smallest particle of nitrogen that has all the properties of nitrogen?
Answers
Answer:
The structure of the atom.
Explanation:
The correct answer is - The structure of the atom.
Reason -
An atom is the smallest unit of matter that retains all of the chemical properties of an element.
What parts of an atom can change during a nuclear reaction that cannot change during a chemical reaction? The number of neutrons and electrons The number fo protons and neutrons The number of electrons only The number of protons and electrons
Answers
Answer:
The number of protons and neutrons.
Explanation:
Neutrons and Protons can't be removed from nucleus from chemical reactions because they are held together super strong and tight. However, nuclear reactions are strong enough to separate them.
hope this helps :)
Answer:
The number of protons and neutrons
Explanation:
How many molecules are in 6.25 grams of N2O5?
Answers
Answer:
0.0578647982046175
Explanation:
Which two are isotopes of one another?
a. Atoms 1 & 2
b. Atoms 2 & 3
c. Atoms 1 & 3
d. Atoms 1 & 4
Answers
hello, do you think you know the order of this?
Answers
Answer:
1. A
2. B
3. D
4. C
Explanation:
Just trust me. Good luck on your test! (I go to K12 as well.)
How hot is magma?
27 points
Answers
Answer:
2200 degrees Fahrenheit
Explanation:
700°C to 1300C where's my points at
Help please!!!!!!!!!
Answers
Answer:
D. Element
Explanation:
Fe is an element. It isn't more than one element chemically combined (compound), it isn't a charged particle (ion), and it isn't the smallest possible unit of multiple atoms combined together (molecule).
PLEASE ANSWER ALL QUESTIONS WILL MARK BRAINLY
1. Calculate the density for the following cube if it’s mass is 1.25 g and each side has a measurement of 3 cm.
2. Would the cube in question 1 float or sink in water? ( Calculate the density for the following cube if it’s mass is 1.25 g and each side has a measurement of 3 cm.)
3. If an irregular-shaped piece of gold is placed into a graduated cylinder and it displaces 15 ml of water, what is the volume of the object?
4.How many elements are in the particle with the chemical formula C2H7N3?
5.How many atoms are in the particle with the chemical formula C2H7N3
Answers
Answer:
1. 2.89
2. Will it float in fresh water? Yeah, sure it will!
3. 5g/ml
4. 3 because the letters represent the elements
5. 12
Explanation: