Answer:
Moving water and blowing winds are major factors that impact the appearance of our planet by causing weathering and erosion.
Explanation:
Waves and winds pounding against rock and sand break down the materials in a process called weathering and move them away in a process called erosion, resulting in a changing landscape.
Answer:
Mainly water and salt. That can be ocean water blowing or road salt.
What is the relationship between the number of precipitates and the location on the periodic table?
Answer: 5/9 of the radius of the Earth. This is assuming that points are chosen randomly according to the following algorithm: We take a cube which precisely encloses the Earth and choose points uniformly from within that cube.
Explanation: YW . I hoped that helped.
can anyone please help with this?
Answer:
It's the first or the second answer.
Explanation:
How can water be changed into ice
Answer:
- The molecules stick together and form a solid making ice
- By removing heat
Calcium oxide is a basic oxide.Explain, using a chemical equation, why calcium oxide is basic.
Answer:
Explanation:Calcium oxide (CaO), commonly known as quicklime or burnt lime, is a widely used chemical ... Chemical formula. CaO ... Both it and a chemical derivative (calcium hydroxide, of which quicklime is the base anhydride) are important commodity ... The major use of quicklime is in the basic oxygen steelmaking (BOS) process.
An oxide is considered basic if it produces a base when it reacts with water. Calcium oxide is a basic oxide because it forms salts when it interacts with acids.
What is calcium oxide ?Calcium oxide, sometimes referred to as quicklime or burned lime, is a common chemical substance. At room temperature, it is a crystalline solid that is white, caustic, and alkaline.
Industries that manufacture glass and porcelain employ calcium oxide. Additionally, it is employed in the preparation of calcium carbide, calcium cyanamide, bleaching powder, and sugar purification. Other applications for it include cement, mortar, and water softeners.
Quicklime or burnt lime, also known as calcium oxide (CaO), is a chemical substance that is frequently used. At room temperature, it is a crystalline solid that is white, caustic, and alkaline.
Thus, Calcium oxide is a basic oxide because it forms salts when it interacts with acids.
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6. How many electrons will an iodine atom donate or accept, based on its number of valence electrons?
A.donate seven electrons
B.accept one electron
C.donate one electron
D.accept seven electrons
Given :
An atom Iodine.
To Find :
How many electrons will an iodine atom donate or accept, based on its number of valence electrons :
A.donate seven electrons
B.accept one electron
C.donate one electron
D.accept seven electrons
Solution :
We know, valence electron in Iodine is 7 electrons.
So, it is easy for iodine to accept 1 electron rather than giving all 7 electrons to another element.
Therefore, Iodine will accept one electron ( Option B.).
Hence, this is the required solution.
how many molecules of oxygen gas (O2) are in 8 grams of oxygen
The number of molecules in the 8 grams of oxygen gas is equal to 1.506 × 10²³.
What is Avogadro's number?The Avogadro constant is denoted [tex]N_A[/tex] and is the proportionality factor that is the number of constituent particles such as atoms, or ions in one mole of a substance.
Avogadro's number is a constant with a numeric value of 6.022 × 10²³ reciprocal moles. Avogadro's number is named by scientist Stanislao Cannizzaro after the Italian scientist Amedeo Avogadro.
Given, the mass of the oxygen gas = 8 g
The number of molecules of one mole of oxygen gas = 6.022 × 10²³
The molecular mass of one mole of oxygen gas = 32 g
It means 32 g of the oxygen gas has molecules = 6.022 × 10²³
Then 8 grams of oxygen gas will have molecules = (8/32) × 6.022 × 10²³
= 1.506 × 10²³
Therefore, the molecules of oxygen gas are 1.506 × 10²³.
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Match them please, I’ll give brainliest but only if it’s right.
Help me with my Science assignment please its graded.
Answer:
i think use water displacement with just one 10c
Explanation:
__NaCI + __F2=__NaF + __CI2
Answer:
2 NaCl 2 + F2 = 2NaF + 2Cl2
Please help me!!!
The graph below represents the heating of water in a pot. At 150 seconds, the water has just reached a boil. If the heat is left on, what will happen to the temperature and volume of water in the pot? (All temperatures in °C.)
A. The temperature will rise, and the water volume will decrease.
B. The temperature will rise, and the water volume will remain constant.
C. The temperature will remain constant, and the water volume will decrease.
D. The temperature will remain constant, and the water volume will remain constant.
So technicaly the answer is D
Name the following Compound: KCI
Answer:
Potassium Chloride
Explanation:
K = Potassium
Cl = Chlorine
3. What would be the effect of bringing a basketball that was inflated indoors outside on a freezing winter
day?
Answer:
it would go back to being deflated
Can someone show their work on how to do this: Calculate the number of moles of Al2O3 present in 23.87g. (Molar mass of Al2O3= 102.0g/mol)
Answer:
0.234 moles
Explanation:
moles of Al2O3 = mass / molar mass
moles of Al2O3 = 23.87g / 102.0g/mol
moles of Al2O3 = 0.234 moles (to three significant figures)
Which substance made up minerals
Answer:
chemical elements
Explanation:
sorry if im wrong.
Calculate how much sample remains of a 200 g sample of Polonium-210 after 552 days (Polonium-210 has a half-life of 138 days).
Answer:
Calculate how much sample remains of a 200 g sample of Polonium-210 after 552 days (Polonium-210 has a half-life of 138 days).
Explanation:
thats all you said
Which is a property of matter that you CANNOT observe just by looking at an object?
A color
B temperature
C shape
Answer: temperature
Explanation:
If you see a hot red ball then you know the color, red, and the shape, a ball, but you don’t know it’s hot.
The property of matter that you cannot observe just by looking at an object will be temperature.
What is matter?Matter can be defined as everything that has mass as well as volume (takes up space). It is pretty straightforward to illustrate that most typical objects which we deal with everyday basis possess mass as well as take up too much space.
It is known that if we look any matter , the physical appearance of any matter can be determined by its color and shape not with temperature.
Therefore, the correct answer will be option B.
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In 98% of cases, injuries to humans occur because someone did something unwise, became complacent while working on the
animal, or did not know how to read the animal's body language.
True
O False
Next Page
Back
Answer:
true
Explanation:
Signs that a wild animal needs your help
true because when the animal is bleeding, apparent or obvious broken limb, it needs your help. and for birds if it's featherless or nearly featherless and on the ground, it needs your help. if you see a animal shivering, or there’s a dead parent nearby, and the last thing to know if a animal need help is if the animal is crying and wandering all day long.
FACTS!!!!!!!!!!!!!!
LEWIS DOT
Mg3 N2 how do I get my answer
Answer:
mayori moriti
Explanation:
dot al time
mlojwkName the following alkane molecule:
CH3CH(CH3)CH2CH(CH3)2
Answer:
answer is C
Explanation:
The name of the given Alkane molecule is 2,4-di-methyl Pentane. It can be named with the help of IUPAC Nomenclature technique.
What is IUPAC Nomenclature ?IUPAC is an acronym for International Union of Pure and Applied Chemistry, which is a globally recognize international chemistry standards organization that has named all the chemical organic substances in a systematic manner
All deviations, either multiple bonds or atoms other than carbon and hydrogen, are indicated by prefixes or suffixes according to a specific set of priorities.
Therefore, The name of the given Alkane molecule is 2,4-di-methyl Pentane. It can be named with the help of IUPAC Nomenclature technique.
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Which of the following pictures correctly show the structure of the H+ ion? Click on the picture to see each choice.
Answer: The answer is the one with the letter P in the red circle.
Explanation:
Answer:
this
Explanation:
because
La etiqueta de una botella de vino indica que tiene una concentración de 14,5% v/v. ¿Cuál es el volumen (soluto) en mL de alcohol contenido en una copa que se llena con 75 mL (disolución) de vino?
Answer:
El volumen de alcohol contenido en una copa que se llena con 75 mL (disolución) de vino es 10.875 mL
Explanation:
El Porcentaje Volumen a Volumen o Porcentaje en Volumen (%v/v) es una medida de la concentración que indica el volumen de soluto por cada 100 unidades de volumen de la solución. Es decir, es una medida de la concentración de una sustancia en una solución que expresa la relación del volumen del soluto con el volumen total de la solución.
El Porcentaje Volumen a Volumen de una disolución es determinada por la siguiente expresión:
[tex]v/v=\frac{volumen soluto}{volumen disolucion} *100[/tex]
En este caso:
%v/v= 14.5volumen soluto= ?volument disolucion= 75 mLReemplazando:
[tex]14.5=\frac{volumen soluto}{75} *100[/tex]
Resolviendo:
[tex]volumen soluto=\frac{14.5*75}{100}[/tex]
volumen soluto= 10.875 mL
El volumen de alcohol contenido en una copa que se llena con 75 mL (disolución) de vino es 10.875 mL
A 15.9 g sample of sodium Carbonate is added to a solution of acetic acid weighing 20 g. the 2 substances react, releasing carbon dioxide gas to the atmosphere and water. after reaction, the contents of the reaction vessel weighs 29.3 g. what mass of carbon doixide was released into the atmosphere during the reaction?
Answer:
hope that helps
Explanation:
The total mass of reactants taken = 15.9 + 20.0 = 35.9 gm. From the conservation of mass the final mass of the contents of the vessel should also be 35.9 gm. But it is only 29.3 gm. The difference is due to the mass of released carbon dioxide gas.Hence the mass of carbon dioxide gas released = 35.9 – 29.3 = 6.6 gm
12. Determine the mass in grams of each of the following.
a. 6.35 mol Al
b. 52.4 mol P
Please help❤️
Answer:
1 mole is equal to 1 moles Al, or 26.981538 grams.
Explanation:
171.3327663
1623.0250764
The mass in grams of the following is required.
The mass of Al is 171.323 g.
The mass of P is 1622.8 g.
M = Molar mass of Al = 26.98 g/mol
n = Number of moles = 6.35 mol
Mass is given by
[tex]m=nM\\\Rightarrow m=6.35\times 26.98\\\Rightarrow m=171.3\ \text{g}[/tex]
The mass of Al is 171.323 g.
M = Molar mass of P = 30.97 g/mol
n = Number of moles = 52.4 mol
Mass is given by
[tex]m=nM\\\Rightarrow m=52.4\times 30.97\\\Rightarrow m=1622.8\ \text{g}[/tex]
The mass of P is 1622.8 g.
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A reaction that releases energy is called endothermic .
True or False
Answer: False
Explanation: Endothermic means it absorbs heat energy.
A student was measuring the ratio of a circle’s circumference and diameter. They found the circumference to be 6.28 cm and the diameter to be 1.8 cm. The actual ratio (circumference divided by diameter) was 3.14. What was their percent error?
Answer:
Percent error = 11%
Explanation:
Given data:
Circumference = 6.28 cm
Diameter = 1.8 cm
Actual ratio of circumference and diameter = 3.14
Percent error = ?
Solution:
Formula:
Percent error = ( measured value - actual value / actual value) ×100
Measured value:
Measured ratio of circumference and diameter = 6.28 cm/1.8 cm
Measured ratio of circumference and diameter = 3.49
Now we will put the values in percent error formula.
Percent error = (3.49 -3.14 / 3.14) ×100
Percent error = (0.35 / 3.14) ×100
Percent error = 0.11×100
Percent error = 11%
Explain why you think learning about the rock cycle will help us better understand the world around us.
Answer:
You can learn about common things happening to the environment that aren't good. Such as erosion, and the effects it has on the land surrounding it.
Explanation:
True of false: Nitrogen in the atmosphere is fixed by bacteria that typically reside around the roots of plants.
Can someone tell me what biotechnology means
Answer:
Biotechnology is the part of applied science that uses living beings and their subsidiaries to deliver items and cycles. These items and cycles can apply to a few parts of the economy going from medical services and medication to biofuels and ecological security.
Explanation:
Which of the following is an inorganic compound?
a. ammonia (NH3)
b. glucose (C6H12O6)
c. butane (C4H10)
d. vinegar (C2H4O2
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Write the formulas for the analogous species of the elements of period 3; would you expect them to have the same hybridization at the central atom?
Answer:
[tex]$AlH^-_4, SiH_4 \text{ and}\ PH^+_4$[/tex]
Explanation:
The elements belonging to third period which corresponds to B,C and N are Al, Si and P. All these elements in the third period tries to combine with four of hydrogen atoms and form an analogous species.
The formulae of these species are given as [tex]$AlH^-_4, SiH_4 \text{ and}\ PH^+_4$[/tex]
All these species have a central atom which has four electron domain and the geometry of the electron domain is tetrahedral. The hybridization which corresponds to the geometry of tetrahedral electron domain is [tex]$sp^3$[/tex] .
So [tex]$AlH^-_4, SiH_4 \text{ and}\ PH^+_4$[/tex] have the same hybridization at the central atom such as [tex]$BH^-_4, CH_4 \text{ and}\ NH^+_4$[/tex] .
The formulas of the analogous species of the elements of period 3 are [tex]\rm AlH_4, SiH_4, and\; PH_4[/tex]. These elements have the same hybridization ate the central atom.
What are analogous species?Analogous species are those that have similar functions.
In chemistry, the elements that are present in the same column have similar properties.
These elements with similar properties are called analogous species of the periodic table.
Thus, the formulas are [tex]\rm AlH_4, SiH_4, and\; PH_4[/tex], and they have the same hybridization at the central atom.
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