Answers
Answer:
C) It moves faster and collects more data
Explanation:
Related Questions
1. Take a look at all the elements in period 3. What do you notice? *
5 points
A. They have the same number of energy levels
B. The number of energy levels decreases as you go across the period from left to right
C. They have the same number of valence electrons
D. The number of valence electrons decreases as you go across the period from left to right
Answers
Answer:
D
Explanation:
beacause all the elements in period 3 has different valence electrons hence you look at the first element in period 3 is sodium which has a valence electron of 1 when you go across the period to the right their valence electron decreases to be negative
Answer:
D is the correct answer i hope this is correct
In the graphic,
X represents which element?
31
x
15
Answers
Answer:
B. X represents phosphorus
Explanation:
In an isotope symbol, you write the mass number above the atomic number. So the 31 represents the mass of the protons and neutrons of the element added together, and the 15 represents the atomic number or the total number of protons in the nucleus.
What does the prefix “geo” mean?
Please Help
I will give you Brainlist
Answers
A container of hydrogen peroxide originally has a mass of 28.96 grams and then completely decomposes into water and oxygen gas. The mass of water produced is 15.33 g. What mass of oxygen gas was also produced?
Answers
Answer:
dhshrvehduvhdhehejieeiie
If you had 3.6 moles of AI(NO3)3, how many grams would you expect to have?
Answers
766.7856 g
Molecular weight of Aluminium Nitrate is 212.996 g/mol. 3.6 moles of Aluminium Nitrate is: 212.996 × 3.6 = 766.7856
1. Write the word equation for the reaction occurring between lead nitrate and sodium chloride. 2. From your answer in 1 write a balance chemical equation showing all state symbols. 3. Then write the ionic equation for the react ion occurring.
Answers
Explanation:
Word Equation
Lead Nitrate + Sodium Chloride --> Lead Chloride + Sodium Nitrate
Balanced Chemical Equation
2 NaCl (aq) + Pb(NO3)2 (aq) → PbCl2 (s) + 2 NaNO3 (aq)
Ionic Equation
In an ionic equation, the aqueous species in the reaction are broken up into ions.
2Na⁺ + 2Cl⁻ + Pb²⁺ + 2NO₃⁻ → PbCl2 (s) + 2Na⁺ + 2NO₃⁻
can someone help me figure out what the Lewis structure for NCl2−?
Answers
Answer:
Chlorine is in group 7A, so it has 7 valence electrons
The Lewis structure for the molecule NCl²⁻ with -2 charge is attached in the image below.
What are Lewis structures?Lewis structures are also called as electron dot structures and can be drawn if the molecular formula of a compound is known. It provides information regarding the nature of bond and the position of atoms .
They are also capable of exhibiting the lone pair if any present in a molecule or compound.Lewis defined a base to be an electron pair donor and an acid to be an electron pair acceptor.
They are capable of reflecting electronic structure of elements and even the pairing of electrons . In the diagram, each dot represents an electron while a pair of dots represent a bond between the atoms.It helps in understanding the bonding between the two atoms.
Learn more about Lewis structures,here:
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What is a characteristic of asexual reproduction?
Answers
Answer:
Sexual reproduction
will gravitational force change based on a change of mass or a change of distance between objects
Answers
Answer:
The size of the gravitational force is proportional to the masses of the objects and weakens as the distance between them increases.
How many atoms are in magnesium acetate!? Please I cant answer its and feel free to add me
Answers
Answer:
Hey this is your answer 59.05.
Explanation:
C) $18.06 \times {10^{23}}$ D) $24.08 \times {10^{23}}$ Hint: In order to find the number of atoms in 48 g of Mg, use the formula which relates the number of particles/atoms with the Avogadro number and number of moles of the substance and this required formula is: number of atoms = number of moles × Avogadro's number.
Please can I have brainliest :]
In a chemical reaction, the reactants (beginning elements or compounds) but have the same number and type of atoms as the products (the new substance created). This is an example of...
a) law of conservation of mass
b) law of conservation of energy
c) covalent bonding
d) product synthesis
Answers
Answer:The law of conservation of matter says that matter cannot be created or destroyed. In chemical equations, the number of atoms of each element in the reactants must be the same as the number of atoms of each element in the products. ... There are two oxygen atoms in the reactants and two atoms of oxygen in the product.
Explanation:
If the substance in the diagram was heated to T2, what is happening if the substance is allowed to approach T1?
1.The average kinetic energy is decreasing
2. The average kinetic energy has increased
3. The highest energy level has decreased
4. Fewer molecules would have a lower energy level
5. More molecules have a higher energy level
Answers
Answer:
b
Explanation:
Which statement is true regarding nuclear power plants?
The disposal of radioactive wastes is an intended benefit.
Uranium mining is an intended benefit.
Damage caused to the environment is an unintended consequence.
The creation of large amounts of electricity is an unintended consequence.
Answers
but its c because it dealing with power
Explanation:
Cu2(s)+O2(g)=Cu2O(g)+SO2(g)
please help urgent will give brainiest
Answers
Answer:
2 Cu2S + 3 O2 = 2 Cu2O + 2 SO2
Explanation:
2 Cu2S + 3 O2 = 2 Cu2O + 2 SO2
why is cardboard, paper, or ceramic a better choice for coffee mugs?
Answers
three ways how travelers should be considerate towards other travelers when using public transport
Answers
-do not take up extra seats/space using their luggage or bags
-be aware of their surrounding so they do not bump into people or step on their feet
The three ways in which travelers should be considerate when using public transport include the following:
Use of headphonesUsing a handkerchief when sneezingNot stepping on people by being aware and vigilantWhat is a Public transport?This is the type of transport which is available to the general public such as trains, buses etc.
It is best to be considerate when using it by applying the following methods mentioned above to prevent disturbance and conflict.
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I need help I tried many times and I don’t get it
Answers
Answer: ummm what is this cause I don't get it either
Explanation:
i need help with this to lol
Emma wrote, 'My investigation was good' , as her conclusion.
Philip said this was not a scientific conclusion.
Explain why Emma's conclusion is not scientific
Answers
Answer:
Emma's conclusion is not scientific. She is stating an opinion because she thinks her investigation was good which is not necessarily scientific.
I can determine the molar mass of an element by looking on the Answer under the atomic mass for the element.
Answers
Answer:
YES that is the molar mass can be found as the atomic mass of a single atom, BUT when you get to larger molecules your molar mass will be a combination of atomic masses.
Explanation:
name three pure elements and three pure compounds
Answers
Answer:
Pure elements:
Hydrogen(H)
Nitrogen(N)
Magnesium (Mg)
Pure Compounds:
Oxygen gas(O2)
Water (H2O)
Ammonia (NH3)
Explanation:
Hope it helps.Please mark me brainliest.^-^
A friend tells you that's after a candle burn there is less matter than before the flame was lit is your friend correct explain why or why not
Answers
Answer:
See explanation
Explanation:
The law of conservation of matter states that "matter cannot be created or destroyed. In a physical change, substances can change form, but the total mass remains the same."(Virginia)
Hence, the quantity of matter present before and after the candle burn must remain the same in accordance with this law stated above.
Hence, my friend was not correct.
Which change does not increase the speed of reaction between zinc and hydrochloric acid?
Answers
If you want a more quantitative analysis of reaction rate, you can perform the experiment in a eudiometer tube that is inverted and completely filled with liquid. As the hydrogen gas collects in the tube you can measure its accumulated volume with time. That will allow you to determine an approximate kinetic rate law for the process. The rate law determined in this manner will suffer from error due to temperature and surface area changes as well as gas volume error due to water vapor. But, it is an interesting application of chemical kinetics.
By adding the decreasing the temperature, the speed of the reaction will not be increased.
What is speed of the reaction ?The reaction rate, which is a measure of how quickly reactants are consumed as well as products are created, determines the speed of a reaction.
When the temperature is lowered, the molecules move more slowly and collide less. The reaction's speed is slowed as the temperature drops.
Therefore, by adding the decreasing the temperature, the speed of the reaction will not be increased.
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calculate the number of moles of al2o3 that are produced when 3.60 mol fe is produced in the following equation. 2Al+3FeO—> 3Fe+Al2O3
Answers
Answer:
5. a
Explanation:
Al+3FeO—> 3Fe+ Al2O3
3.60—>3.60÷3=1.20 (mol)
How many liters of CH4 gas are there in 1.20 moles of CH4 when the gas is held under standard conditions?
Please answer quickly!
Answers
Answer:
26.88 L
Explanation:
When any gas is held under standard conditions, one mol will occupy 22.4 liters.
With the above information in mind, we can calculate how many liters would 1.20 moles of CH₄ gas occupy under standard conditions:
1.20 mol * 22.4 L/mol = 26.88 L
So 1.20 moles of CH₄ would occupy 26.88 liters.
Thread-like structures that are found in the nucleus of a cell that contains all DNA.
A.) DNA
B.) Genes
C.) Chromosomes
D.) Nucleus
Answers
a moon phase that looks like a full circle is called.
Answers
Answer:
a full moon or new moon
Explanation:
Explore: Arrange the matter
from largest to smallest.
Organ
Molecule
Organelle
. Atom
Organism
. Cells
. Tissues
Elements
Answers
Answer:
The levels, from smallest to largest, are: molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere.
Explanation:
The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
Answer:
the matter
from largest to smallest.
- organism-organ-organelle-tissue-cell-atom-elements-molecule
Which of the following is a part of the kinetic-molecular theory?
(PLEASE HELP)
Your answer:
Most of the volume of a gas is occupied by gas particles.
The particles of a gas are in constant, random motion.
The average kinetic energy of a gas is dependent upon the identity of the gas.
Gases have indefinite shape and indefinite volume.
Attractive forces between gas molecules must be accounted for with a gas law calculation.
Answers
Answer:
2)The particles in a liquid are moving past one another constantly.
3)The particles in gas move freely in all directions.
4)The particles in a solid vibrate in a fixed position.
6)The particles in a gas have few attractions between them.
7)The particles in all states of matter are always moving.
Explanation:
Methanol, CH3OH, is the simplest of the alcohols. It is synthesized by the reaction of hydrogen and carbon monoxide. Write chemical reactions. If 500 mol of CO and 750 mol of H2 are present, which is the limiting reactant?
Answers
Answer:
The limiting reactant is H₂
Explanation:
The reaction of hydrogen (H₂) and carbon monoxide (CO) to produce methanol (CH₃OH) is the following:
2H₂(g) + CO(g) → CH₃OH(g)
From the balanced chemical equation, we can see that 1 mol of CO reacts wIth 2 moles of H₂. So, the stoichiometric ratio is:
2 mol H₂/1 mol CO = 2.0
We have 500 mol of CO and 750 mol of H₂, so we calculate the ratio to establish a comparison:
750 mol H₂/500 mol CO = 1.5
Since 2.0 > 1.5, we have fewer moles of H₂ than are needed to completely react with 500 moles of CO. In fact, we need 1000 moles of H₂ and we have 750 moles. So, the limiting reactant is H₂.
Which of the following is an oxidation-reduction reaction?
ZnS(s) + 2O2(g) Right arrow. ZnSO4(s)
CaO(s) + H2O(l) Right arrow. Ca(OH)2(s)
6Li2O(s) + P4O10(g) Right arrow. 4Li3PO4(s)
SO2(g) + H2O(l) Right arrow. H2SO3(aq)
Answers
Answer:
A: ZnS(s) + 2O2(g) --> ZnSO4(s)
Explanation:
;) good luck
Answer:
The answer is A or the first choice
Explanation:
ZnS(s) + 2O2(g) Right arrow. ZnSO4(s)
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