subtract the atomic number from the mass number
hope that helps^^
what must happen first before a change of state can occur (change in mass, change in position, change in volume, or change in energy)
Answer:
Change in energy.
Explanation:
An energy change is required to shift one state to another or do any of the other listed.
I am the life cycle that contains tiny undeveloped plants,
but I still have enough food for growth. Who am I?
Please help PLEASE
I need help with this question ASAP this should have 2 answers
Answer:
The correct answer is B. and C. according to me!
Answer:
A. and C.
no explanation...
what events are typically earthquakes near large bodies of water
Answer:
tsunamis
they are literally water earthquakes that force tons of water ashore and wipes out cities and towns
Is adding manganese dioxide to hydrogen peroxide, a chemical or physical change?
Answer: chemical change as a new product is formed
WHOEVER ANSWERS A GOOD ANSWER I WILL GIVE BRAINLIEST!
What would happen to the rate of evaporation if you moved all the containers outdoors into direct sunlight?
Answer:
Molecules contained in a liquid evaporate from the surface area. This means that the larger the surface area, the faster the rate of evaporation. ... This means all the other factors that affect the rate of evaporation are identical. Leave the containers for one hour.
Explanation:
Answer:
Evaporation would accelerate.
Explanation:
Direct sunlight increases the thermal energy on the containers, increasing evaporation.
Which has a lower electronegativity and why? N or P? Use 'force of attraction' in your answer
Answer:
The electron sets divided among two particles are not really shared similarly. For instance, while the common electron sets are shared similarly in the covalent security in Cl2, in NaCl the 3s electron is taken from the Na iota and is fused into the electronic design of the Cl molecule - and the compound is most precisely portrayed as comprising of individual Na+ and Cl− particles (ionic holding). For most covalent substances, their bond character falls between these two limits. We showed beneath, the bond extremity is a helpful idea for portraying the sharing of electrons between molecules inside a covalent bond:
A nonpolar covalent bond is one in which the electrons are shared similarly between two particles.
A polar covalent bond is one in which one iota has a more noteworthy fascination for the electrons than the other molecule. On the off chance that this overall fascination is sufficiently incredible, the bond is an ionic bond.
Explanation:
*2Al(OH), + 3H,SO, Al(SO4)2 + 6H2O
reaction type
If 220 grams of C3H8 react with 20 grams of O2, how much CO2 can be formed?
Answer:
Explanation:
Story that ends in i have never found such a kind person ever since
Answer:
I was traveling on a train where I fell asleep. someone stole my luggage in which I had money and other essentials. when the ticket checker arrived a lady paid my fine. she helped me a lot. when I told her about being robbed she helped me and took me to the police station and I found my bag. I insisted she take the money she paid for my fine but she said that in return you too help someone."I have never found such a kind person ever since.".....
Explanation: I think this is what you are looking for. Hope this helps.
Why is there a border between light and dark on the moon
Answer:
because the sun illuminates the half of the moon that's facing it leaving the other half dark
What is the molecular formula of a compound with an empirical formula P2O5 and a gram-molecular mass of 284 grams? And why?
Which object would have a greater velocity change?
Answer:
The object with less mass will have a greater change in velocity
Explanation:
Answer:
the one with the smaller object mass becaise you get more force upon impact with less effort to move
Which of the following conditions must be met for a volume ratio to be created from a balanced chemical equation? (3 pm
O Changing temperature and pressure
Constant temperature and pressure
Changing temperature and constant pressure
Constant temperature and changing pressure
Answer:
The answer will be Constant temperature and pressure
Explanation:
Just took the test and it was correct 100%!!!
Answer:
Constant temperature and pressure
Explanation:
took the test
Is this a balanced equation? 4NH3+ 5O2 – 4NO + 5H20
Answer:
The reaction is not balanced.
Explanation:
The reaction expression is given as:
4NH₃ + 5O₂ → 4NO + 5H₂O
In a balanced reaction equation, the number of atoms on both sides of the expression is the same.
Now let us investigate;
Elements N H O
Reactants 4 12 10
Products 4 10 9
We see that the number of H and O on both sides of the expression is not the same. The reaction is not balanced.
Which is one factor that describes a Mediterranean climate?
has many trees
is found in inland areas
has cool and rainy winters
has little to no precipitation
PLEASE I WILL MARK BRAILIEST AND GIVE 30 PTS
Answer:
dry
polar
highlands
temperate marine
temperate continental
Explanation:
I would appreciate help on writing an equalibrium constant expression.
Explanation:
it would be
[tex]kc = (products) \div (reactants) \\ kc = \frac{nh3)^{2} \times (co2) \times (h2o)}{(nh4)^{2}co3 }[/tex]
this the expression however when you are working out Kc do not include nh4^2co3 as it is a solid and it's concentration remains constant so remember to remove the nh4^2co3 and usage would just have the top part to work out ok
What eventually happens to all the energy in a food web? The energy in a food web finally??????
Answer:
All of the consumers and producers eventually become nourishment for the decomposers.
Explanation:
Energy is transferred between organisms in food webs from producers to consumers. The energy is used by organisms to carry out complex tasks. The vast majority of energy that exists in food webs originates from the sun and is converted (transformed) into chemical energy by the process of photosynthesis in plants.
What are valance electrons used for?
Answer:
In chemistry and physics, a valence electron is an outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.
which statement about the earth atmosphere is true
A.recent incease in carbon dioxide levels can contribute to a long--term cooling of eath's climate. B.a recent decrease in carbon dioxide levels will incease plant growth on eath.c.in the past few decades,carbon level has been rising.D.in the past few decades,carbon level has been falling
How many atoms for each element in this compound:
Pb3(PO4)2
Pb =
P=
O=
Answer:
In the compound Pb3(PO4)2, there are 3 Pb atoms, 2 P atoms, and 8 O atoms.
Let me know if this helps!
There are 3 atoms of pb(Lead), 2 atoms of P(Phosphorus) and 8 atoms of O(Oxygen) are present in Pb3(PO4)2.
What is an atoms?An atom is the smallest constituents of matter that can neither be created nor be destroyed.An atom It consists of a central nucleus, usually surrounded by electrons. Each electron is negatively charged. The nucleus is positively charged, and contains relatively heavy particles known as protons and neutrons.What are Compounds?
A compound is a combination of atoms of same or different types of an element in a fixed ratio.
In the given question Pb3(PO4)2 is a compound of lead phosphate which is made up of 3 atoms of pb(Lead), 2 atoms of P(Phosphorus) and 8 atoms of O(Oxygen).
Learn more about atoms here: http://brainly.com/question/6258301
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Write the word and balanced chemical equations for the reaction between:
Sulfuric acid + aluminum hydroxide
Answer:
Alumminum hydroxide reacts with sulfuric acid as follows: 2Al(OH)3+H2SO4-->Al2(SO4)+6H2O.
Explanation:
plz mark as brainlist
The equation shows the reaction between magnesium and chlorine to produce magnesium chloride.
Mg + Cl2 → MgCl2
Magnesium chloride consists of Mg2+ and Cl− ions.
Describe, in terms of electrons, how magnesium chloride is produced from magnesium and chlorine.
Answer: Mg is a cation and Cl is an anion
Explanation: In more detail, if you look at the periodic table, the group number (or columns) of the elements, describe how many valence electrons, or how many electrons the element has available to have a complete an electron shell. Magnesium being in group 2, it has one 2 electrons that will be "donated" to an anion that it bonds with. However, Chlorine being in group 17, (look at the single digit number for double digit groups), it has 7 valence electrons. Knowing that a full electron shell is usually 8 electrons, it needs only one. Since Magnesium has 2 valence electrons to give away, two atoms of Chlorine gas will then bind to the Magnesium, where the 2 Chlorine atoms will take the electrons to fill their shells. Magnesium Chloride, in terms of charges when in ions, [Mg]2+ and 2 [Cl]-1
Magnesium chloride is formed when magnesium ion formed from the loss of two electrons and two chloride ions formed by accepting one electron each are held together by electrostatic attractive forces.
How is magnesium chloride formed from magnesium and chlorine?Magnesium chloride is an ionic compound which consists of magnesium ions and chloride ions.
A Magnesium atom forms ion by giving up two electronsTwo Chlorine atoms become ions by accepting one electron each.The oppositely-charged ions are attracted to each other.Therefore, magnesium chloride is formed when magnesium ion formed from the loss of two electrons and two chloride ions formed by accepting one electron each are held together by electrostatic attractive forces.
Learn more about ionic compound at: https://brainly.com/question/13690700
Based on Avogadro's principle, the coefficients in chemical equations involving only gases represent two types of quantities. Name the two quantities.
Answer:
subject
Chemistry, 08.04.2020 04:39 dnprops1544
Based on Avogadro's principle, the coefficients in chemical equations involving only gases
represent two types of quantities. Name the two quantities.
Explanation:
Answer: Molar ratio is the quantity which will correctly convert between two different substances.
Answer: Option B
Explanation:
Molar ratio is used to determine the number of moles of reactants required to convert to desired number of moles of the products and vice versa. As moles are the coefficient written in any chemical equation. The ratio of the number of moles of the reactants to the number of moles of the products will help to determine the molar ratio.
This molar ratio is used as the conversion factor to determine number of moles required in the reactant side for the reactants to form a desired product of desired moles. We can also determine the number of moles utilized from the reactants from the moles obtained in the products using this molar ratio conversion factor.
20 A student draws the model shown below.
Sun
Earth
Which of these best compares the conditions at Location X and Location Y?
F It is day at Location X and night at Location Y.
GIt is winter at Location X and summer at Location Y.
H There are more hours of daylight at Location X than at Location Y.
1 The moon is brighter when viewed from Location X than when viewed from Location Y.
Answer:
There are more hours of daylight at Location X than at Location Y.
Explanation:
The student has created a model in the diagram in which sun and earth are presented. There are two point location on earth one is x and other is y. The x point is declined towards the sun which means that locations on point x receives more light than location Y. There will be more hours of daylight at Location x.
The best comparison of the conditions at Location X and Location Y is there are more hours of daylight at Location X than at Location Y.
What is the Sun and the Earth?The sun is the big spherical of heat and energy. The sun gives light. The Earth is the third planet of our solar system.
Thus, the correct option is C, There are more hours of daylight at Location X than at Location Y.
Learn more about Sun and the Earth
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Approximately what is the minimum temperature needed to dissolve 10 g of KNO3 in 100 g H2O?
Round your answer to the nearest whole number and type in the number only; no units.
Answer:(a) Potassium nitrate will begin to crystallise at about 56 °C, when its solubility is 100 g/100g water.
Explanation:
The process by which oxygen reacts with iron minerals in rock to form rust is called
Explanation:
your answer is oxidation
Answer:
Oxidation
Explanation:
Write the chemical formula for each:
ammonium nitrate
iron(II) sulfide
magnesium hydroxide
titanium(II) chloride
cobalt(III) oxide
potassium sulfide
barium acetate
magnesium bromide
lithium carbonate
potassium permanganate
Answer:
Ammonium nitrate is NH4NO3
iron(II) sulfate is FeSO4
magnesium hydroxide is MG(OH)2
titanium(II) chloride is TiCI2
cobalt(III) oxide is Co2O3
potassium sulfide is K2S
Barium acetate is C4H6BaO4
magnesium bromide is MgBr2
lithium carbonate is Li2CO3
potassium permanganate is KMnO4
What is the correct formula for the compound formed by Mg and F?
MgF
Mg2F
Mg2+F
MgF2
Look at picture
ASAP please will mark as brainlist don’t got much time
Magnesium phosphate
Find Similar Structures
Molecular Formula
Mg3(PO4)2 or Mg3O8P2
Synonyms
magnesium phosphate
More...
Molecular Weight
262.86 g/mol
The area of a rectangle can be found by multiplying its length by its width. What is the area of a rectangle that is 5.6 cm in length and 9.24 cm wide?
Report your answer with the correct number of significant figures.
Answer:
Area = 51.74cm ²
Explanation:
5.6 × 9.4 = 51.744
Round above answer
= 51.74