Answer:
Amount of ice
Explanation:
When we talk about independent variable, we mean that variable in an experiment that is manipulated and its effect on the dependent variable is measured.
In this case, the amount of ice in each water sample determines the temperature of each sample. Hence the amount of ice is the independent variable.
Answer:
ice cubes added
Explanation:
calculate the mass of one atom of helium.
Answer:
One atom lf helium has a mass of 4 u
Know that 1 u =1.66. 10-24g
SHOW WORK
How many drops are in a 2-L bottle of Pepsi?
Answer:
The number of drops depends upon the size of the drops. So, basically, 1 ml has a drops of 20
so 2000 mo will have a 40k drops
Which statement explains why water is classified as a compound
Answer:
Water is a compound. It contains more than one element: hydrogen and oxygen atoms are joined together;
PLZ HELP!!! Choose A B or C
Answer:
c?
Explanation:
sorry, im not too great with this lol. i probably have it wrong, so i wouldnt really trust my answer lol.
Would a tighter or a looser cover heat the oven faster? How about no covering at all?
PLZ HELP!
What would happen to work and power if the mass of the person walking was increased or decreased? EXPLAIN.
Answer:
it would decrease / increase with the mass
Explanation:
A ____ is the remains of a once-living organism found in layers of rocks, ice, or amber
Answer:
fossil
Explanation:
the dead organism is called a fossil i think
Answer:
A fossil is the remains of a once-living organism found in layers of rocks, ice, or amber
Which change will decrease the electric force between two positively charged objects? moving them closer together moving them farther apart adding neutrons removing electrons
Answer:
Moving them farther apart
Explanation:
One can try to change the distance between the two positive charges in such a way that it increases the distance and decreased the electric force.
Answer:
moving them farther apart
Explanation:
aka B.
What is Industrial chemistry?
Answer:
study of chemical used in industries
toms of elements at the top of a group on the periodic table are smaller than the atoms of elements at the bottom of the group. How does this help explain the difference in the reactivity of metals within a group?
Answer:
Atoms of elements at the top of a group on the periodic table are smaller than the atoms of elements at the bottom of the group. ... The valence electrons of the larger atoms are farther from the nucleus and are easier to remove, so the metals near the bottom are more reactive than those at the top.
While watching tv in your room one nigh, you decide to have some Oreos and a glass of milk. there were only 3 Oreos and science you pored a huge glass of milk you couldn't finish it all. Instead of taking it to the kitchen, you put the glass of milk under your bed. Your mom discovered it three months later when she was cleaning your room. The cup no longer had a white liquid...it now contained a semi-solid layer of cheese like stuff floating on top of a clear liquid. Did a chemical reaction take place, yes or no? what evidence or lack of evidence do you have to support your answer?
Answer:
yes it did.
Explanation:
the product must have produced a smell therefore it created a gas. this means it was a chemical reaction
What's the molar mass of Cr(Cr2O7)3
700 g/mol
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Reading a Periodic TableExplanation:Step 1: Define
Cr(Cr₂O₇)₃
Step 2: Identify
Molar Mass of Cr - 52.00 g/mol
Molar Mass of O - 16.00 g/mol
Step 3: Find MM
Molar Mass of Cr(Cr₂O₇)₃ - 52.00 + 6(52.00) + 21(16.00) = 700 g/mol
Can any person help me for this problem? Anyone's welcome
Answer:
The anode made of the impure copper
The cathode made of pure copper
The electrolyte of copper (II) sulfate CuSO₄ solution
The silver impurities at the anode due to their high tendency of accepting electrons and being a stronger reducing agent than either copper or zinc will remain relatively in place and relatively stable and will not actively take part in the oxidation reaction taking place at the anode
The zinc impurities will be the first element of the three metals to give up electrons and go into the solution as zinc ions due to their high tendency to loan out two electrons and become oxidized into Zn²⁺ ions
The drawing of the electrolytic cell created with Microsoft Visio is attached
Explanation:
Explain the formation of an ionic compound between a metal and a non- metal by transfer of electrons with Mg as the metal and chlorine as the non metal to illustrate your answer. Give the reaction that occurs.
Answer: MgCl2
Explanation:
There will be two Chlorine atoms, and one Magnesium atom. The Mg atom will transfer one valence electron to each Chlorine atom to make them stable. I don't know the reaction that happens, I'm Sorryy. But yeah... have a nice day! :)
when an atom reacts, its goal is to become more stable by filling is outer electron shell what are three ways that an atom can fulfill this goal
The three ways that an atom can fulfill this goal is to give away electrons, take an electron, and share electrons.
When an atom reacts ,its goal is to become more stable by filling its outer electron shell by gaining, loosing or sharing electrons.
What is an atom?
An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.
The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.
Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.
Learn more about atom,here:
https://brainly.com/question/13654549
#SPJ2
Can someone help me with a Rocks Presentation that is worth 90 points?
Answer:
Sure!!! Is there a g-mail so I can get a hold of you?
Explanation:
Which of these is a sentence fragment?
The dog barked.
The skateboard wiggled back and forth.
The dog that was riding a skateboard.
We laughed at the dog on the skateboard.
Answer:
the dog barked is the answer
Red light has a wavelength of 700 nm and a frequency of 4.3 x 10^14 s^-1. What is the energy of a single photon of red light?
A. 2.85 x 10^-20
B. 2.85 x 10^19
C. 2.85 x 10^-34
D. 2.85 x 10^-19
Answer:
E = 2.85×10⁻¹⁹ J
Explanation:
Given data:
Wavelength of light = 700 nm
Frequency of light = 4.3×10¹⁴ s⁻¹
What is the energy of light = ?
Solution:
Formula:
E = h × f
h = plancks constant = 6.63×10⁻³⁴ Js
by putting values,
E = 6.63×10⁻³⁴ Js × 4.3×10¹⁴ s⁻¹
E = 28.5×10⁻²⁰ J
E = 2.85×10⁻¹⁹ J
What is the result of cellular respiration? (A) Energy for cell processes is released. (B) Oxygen is released for photosynthesis. (C) Cells undergo decomposition. (D) Nutrients are excreted to prevent the buildup of body fat.
Answer:
A Energy for cell processes is released
I
3. In words, explain what occurs in terms of electrons when
beryllium reacts with oxygen
Explanation:
On the whole, the metals burn in oxygen to form a simple metal oxide. Beryllium is reluctant to burn unless it is in the form of dust or powder. Beryllium has a very strong (but very thin) layer of beryllium oxide on its surface, and this prevents any new oxygen getting at the underlying beryllium to react with it
what is amphoteric oxide please also give eg
Answer:
An amphoteric oxide is an oxide that can act as either an acid or base in a reaction to produce a salt and water. Amphoterism depends on the oxidation states available to a chemical species. Because metals have multiple oxidation states, they form amphoteric oxides and hydroxides.Many metals (such as zinc, tin, lead, aluminium, and beryllium) form amphoteric oxides or hydroxides. Amphoterism depends on the oxidation states of the oxide. Al2O3 is an example of an amphoteric oxide. Amphoteric oxides also include Lead (II) oxide, and zinc (II) oxide, among many others.[2]
Explanation:
hope this will help you
Answer:
Amphoteric oxides react with both acids and alkalis to form salt and water. Examples of amphoteric oxides are zinc oxide and aluminium oxide.
Explanation:
hope it helps....
what is crystal?.give any example
Answer:
A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.Example- Snowflakes, diamonds, and table salt.
Answer:
Examples of everyday materials you encounter as crystals are table salt (sodium chloride or halite crystals), sugar (sucrose), and snowflakes. Many gemstones are crystals, including quartz and diamond. There are also many materials that resemble crystals but are actually polycrystals
Explanation:
a crystal is a piece of a homogeneous solid substance having a natural geometrically regular form with symmetrically arranged plane faces.
PLEASE HELP this is due today the picture is below
Answer:
Explanation:
Ok so the first one would be Electrical energy and Radiated energy
Then the 2 question it would be not electrical but the other 3 for the 3 question it would be it would be Electrical and the radiated energy
And for the last one it would be the last 3
Why krypton and noble gas are not used in airships using the periodic table?
Answer:
Since the noble gases are unreactive or inert, they are safe to use. Helium is used to fill balloons and airships, because it is much lighter that air and it will not catch fire. Neon is used in advertising signs. It will give red glow, but the color can be changes by mixing it with other gases.
Explanation:
Table Salt or NaCl is composed of sodium and chlorine. While the individual elements of sodium and chlorine are very reactive, together they form a popular cooking and baking ingredient. In order to form a salt, an electron must be transferred from one element to the other. Which element (Na or Cl) is more likely to steal an outer electron from the other? Why?
Answer:
Chlorine is more likely to steal a valence electron from sodium.
Explanation:
Sodium is number 11 on the periodic table with one valence electron. Belonging to the first group, it's one of the alkali metal, which are known to be highly reactive. Chlorine is number 17 with seven valence electrons, and it's in the second-to-last group of halogens--also very reactive.
Considering that elements with one valence electron are just about 100% likely to give up electrons to reach a stable state, sodium would be the element that is more likely to lose its valence electron to chlorine. In other words, chlorine would be the electron thief.
Which unit is used to express the amount of energy in food?
Answer:
Calories or Protein don't judge me if i'm wrong on both -__-
Explanation:
How would decreasing the pressure affect the equilibrium of this reaction? Hat 12 32H1 O A. The reaction would remain in equilibrium B. HI would react to produce more H2 and 12 more quickly. O C. H2 and 12 would react to produce HI more quickly. D. All of the molecules would react more slowly.
A. The reaction would remain in equilibrium
Further explanationGiven
Reaction
H₂ + I₂ ⇔ 2HI
Required
the effect of pressure changes
Solution
In the equilibrium system :
Reaction = - action
⇒shift the reaction to the right or left.
The pressure usually affects the gas equilibrium system(only count the number of moles of gases)
The addition of pressure, the reaction will shift towards a smaller reaction coefficient ((the fewest moles of gas )
Reaction
H₂ + I₂ ⇔ 2HI
The reactant side of the equation has 2 moles of a gas(1 mole H₂ and 1 mole I₂) ; the product side has 2 moles HI
So the total number of moles from both sides is the same(2 moles) so that the change in volume (pressure) does not change the direction of equilibrium⇒No shift will occur
Answer:
A. The reaction would remain in equilibrium
Explanation:
What type of thermal energy transfer best describes how the surface of the earth is?
Answer:
Convection
Explanation:
Convection is a form of thermal energy that rotates like, hot air goes up and cool air goes down. This happens in the squishy part of the Earth surface, that's why ppl say the more you dig the hotter it gets :)
Suppose you were writing a summary of the article. Which of these will be most important to put in the summary?
Vertical columns on the periodic table are known as
and horizontal rows are called
O periods, groups
groups, periods
O metals, nonmetals
O metalloids, metals
Answer:
groups and periods
Explanation: