Answer:
200.00 mol
Explanation:
Nitric acid: Nitrogen dioxide is 2:3
and nitrogen dioxide is already 300.00 mol so using the ratio, nitric acid is 200.00 mol
Answer:
200.00
Explanation:
Did it on edge GL
12. Draw the lewis structure for the element to help you answer the question *
Answer:hope it helps
Explanation:
When a substance is added to water, bubbles form. How can you confirm the type of change that took place?
name five organs of the digestive system and state there function
Answer:
Organ Movement Food Particles Broken Down
Stomach Upper muscle in stomach relaxes to let food enter, and lower muscle mixes food with digestive juice Proteins
Small intestine Peristalsis Starches, proteins, and carbohydrates
Pancreas None Carbohydrates, fats, and proteins
Liver None Fats
Explanation:
What causes valley air to move up surrounding mountains during the day?
The Sun warms the air in the valley more than it does the mountains.
The Coriolis Force moves the winds up the sides of hills and mountains.
The Sun warms the tops of hills and mountains more than it does the valley.
The valley air is denser because is of its lower elevation.
Answer:
so the third one
Explanation:
During the day, the sun heats up mountain air rapidly while the valley remains relatively cooler. Convection causes it to rise, causing a valley breeze. At night, the process is reversed. During the night the slopes get cooled and the dense air descends into the valley as the mountain wind.
Answer:
The Sun warms the tops of hills and mountains more than it does the valley.
Explanation:
Which one of the following does not involve a change of state? *
Freezing
Melting
Expansion
Boiling
Answer:
melting is the answer any questions I'm glad to help
When solid converts to gas then heat is required to break the intermolecular forces of attraction between the particles. In this process heat increase but temperature remains the same. Therefore, the correct option is option C.
What is phase transition?Phase transition is a process in which transition takes place from one state to another of a medium on changing temperature or pressure. Phase transition is a physical process as there is no breaking of old bond and forming of new bonds takes place.
During phase transition temperature remain constant as the extra heat that is given to the system that goes into breaking of intermolecular forces of attraction between the particles. So overall temperature remains same but heat keeps on increasing. Among all the given option, expansion is the only process in which change of state does not take place.
Therefore, the correct option is option C.
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which is larger Ca or Ca2+
Answer:
Ca
Explanation:
Ca is larger than Ca2+ because, in the periodic table, the atomic radius increases from top to bottom and from left to right. Also Ca has 2 more electrons than Ca2+ therefore, its atom is bigger because it has an extra shell.
Ca²⁺ is smaller than Ca. As Ca²⁺ has lost two electrons to become positively charged.
Ca²⁺ is the calcium ion, which has lost two electrons to become positively charged. When an atom loses electrons, it becomes smaller because there are fewer negatively charged electrons in the electron cloud to balance the positive charge of the nucleus.
On the other hand, Ca refers to the neutral calcium atom, which has an equal number of protons and electrons. In comparison to Ca²⁺, the neutral calcium atom has two additional electrons, which increases the electron cloud and overall size of the atom.
Therefore, Ca²⁺ is smaller than Ca.
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Which of these landforms woul most likely be found at a divergent boundary?
A. fault line
B. mid-ocean ridge
C. volcanic island
D. mountain
Answer:
A.
Explanation:
Divergent boundaries occur when plates move away from each other, causing rifts.
The landform created by the divergent boundary is the oceanic plates. Thus option B mid-ocean ridge is correct.
What are plate boundaries?Plate boundaries are created by the movement of tectonic plates.When two tectonic plates diverge from each other , a diverging border is created.
As magma or molten rock rises from the Earth's mantle to the surface and solidifies to form new oceanic crust, earthquakes frequently occur along these borders. Divergent plate boundaries can be seen, for instance, in the Mid-Atlantic Ridge.
An area where two plates converge is referred to as a convergent border. The borders of one or both colliding plates may bow up into mountain ranges as a result of the impact, or one plate may bend downward into a deep undersea trench.
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Which of the following statements best describes how metamorphic rock was formed?
A. Low temperature and low pressure may transform an igneous rock into a metamorphic rock with banded layers.
B. High temperature and intense pressure may transform an igneous rock into a metamorphic rock with banded layers.
C. Low temperature intense pressure may transform a sedimentary rock into a metamorphic rock with banded layers.
Answer:
High temperature and intense pressure may transform an igneous rock into a metamorphic rock with banded layers.
Explanation:
A metamorphic rock is formed under high temperature and intense pressure may transform an igneous rock into a metamorphic rock with banded layers.
An igneous rock is often formed when molten magma erupts from the earth's crust. The molten magma is usually very hot but cools off with time to form a solid mass.
This rock that was first formed eventually gets transformed in the course of time as it is acted upon by high temperature and intense pressure which gradually transforms the igneous rock into a metamorphic rock with banded layers.
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Isotopes of the same element have a different number of ______
Answer:
atomic weight..................
How many moles are there in 2.3 x 10^23 formula units of NaCl?
Answer:
0.38 mol
Explanation:
Given data:
Number of formula units = 2.3×10²³
Number of moles = ?
Solution:
According to Avogadro number ,
1 mole contain 6.022×10²³ formula units.
2.3×10²³ formula units × 1 mol / 6.022×10²³ formula units
0.38 mol
Thus, 2.3×10²³ formula units of NaCl contain 0.38 moles of NaCl.
Question 1 (1 point)
Use coefficients to balance the following reaction:
Na + 02 → Na20
Blank 1:
Blank 2:
Blank 3:
Answer:
Blank 1: 4
Blank 2: 1
Blank 3: 2
Explanation:
The unbalanced reaction expression is given as:
Na + O₂ → Na₂O
Now, we use a mathematical approach to balance the reaction given above.
Assign coefficients a , b and c for the blanks:
aNa + bO₂ → cNa₂O
Conserving Na : a = 2c
O: 2b = c
So, let c = 1, a = 2 and b = [tex]\frac{1}{2}[/tex]
Multiply through by 2;
a = 4, b = 1 and c = 2
4Na + O₂ → 2Na₂O
Blank 1: 4
Blank 2: 1
Blank 3: 2
An element whose atoms have the electron configuration 2-8-18-1 is
А
a transition element
B
a noble gas
an alkali metal
D
an alkaline earth metal
Answer:
A transition element atomic number 29 copper Cu
Explanation:
Need help on this please help
Answer:
It's because the Earth is tilted on it's axis. So the second answer.
I hope that helps :)
What is the name for the elements that have some properties of metals and some properties of non-metals
Answer: The metalloids are a unique group of elements that share properties of both metals and nonmetals.
Explanation: They're also called the semimetals because of the shared properties of these elements along the dividing line between metals and nonmetals.
Select the correct location on the image.
In pea plants, white seed coat is a recessive trait and gray seed coat is a dominant trait. Which offspring have a white seed coat?
Answer:
f2 4 answer. GG its right.
Explanation:
Answer:
hey the answer is in box f2 gg
Explanation:
HEY! Nicki Minaj is the queen of rap.
Answer:
O my OMG
Explanation:
Remember Nicki vs. Cardi
Which nuclear equation represents a spontaneous decay?
(1) Rn 21% Po + He
(2) 13 Al + He 18P + on
(3) 235 U + in ~ 13% Ba + Kr + 3n
(4) Li + H → He + He
a. 1
b. 2
C 3
d. 4
Answer:
a. 1
Explanation:
Radon is a member of group 18. It is an odorless heavy gas, that emanates from materials that contain uranium.
Rn is a decay product of 226-Ra, a member of the uranium decay series. The spontaneous decay of Rn decay leads to the emission of an alpha particle.
Rn has a half-life of about 3.8 days and its decay product is 218Po.
The nuclear reaction which shows a spontaneous decay is Rn 21% Po + He.
What is spontaneous reaction?
Those reaction in which value of their enthalpy change and change in Gibb's free energy is negative, are spontaneous in nature.
Among all of the given reaction, only first reaction is spontaneous in nature because the given element Radon (Rn) is the product of the decay of uranium series. And in this reaction energy is emitted in the form of alpha particles.
Hence, option (1) is correct.
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What is the charge of an atom with 21 protons and 20 electrons?
Answer:
Positive
Explanation:
If an atom has more protons than electrons, its charge with be positive. Protons have a positive charge, and electrons have a negative charge.
A block of material has a volume of 2 mº. It has a mass of 1 x 104 kg. Calculate the density of the materia
sample and express your results in g/cm with appropriate scientific notation.
Answer:
d = 0.5×10¹g/cm³
Explanation:
Given data:
Volume of material = 2 m³
Mass of material = 1×10⁴ Kg
Density of material = ?
Density:
Density is equal to the mass of substance divided by its volume.
Formula
d = m/v
Solution:
Volume of material = 2 m³
1 m³ = 1000000 cm³
2 ×10⁶cm³
Mass of material = 1×10⁴ Kg
1 Kg = 1000 g
1×10⁷ g
by putting values into density formula
d = 1×10⁷ g/2 ×10⁶cm³
d = 0.5×10⁷⁻⁶ g/cm³
d = 0.5×10¹g/cm³
Based on the image below, what would an observer on the nighttime side of Earth observe? A total lunar eclipse A partial lunar eclipse A partial solar eclipse A Full Moon
Answer:
A Full Moon
Explanation:
If it is the same image I had it would be a full moon since there are no shadows on the moon. This means the moon gets full sunlight
4 Which form of energy is stored in this
container?
(F) chemical energy
o electrical energy
(I kinetic energy
I sound energy
Answer: (F) chemical energy
Explanation:
a microscope is a labolatory tool that is used to__________ this allowed scientists to ____________ we cannot see using our naked eyes such as _____ protists ______and___________ the main parts of a microscope that magnifies are the __________ and the ___________. the__________ serves as the light source. in order to see he specimen clearly the stage needs to be adjusted at the right distance from the lens. this is done using the __________ and _______. other parts of the microscope such as the______. ______ and _________ serves as a primary support for device
Answer:
See the answer below
Explanation:
A microscope is a laboratory tool that is used to magnify the image of objects This allowed scientists to study tiny organisms that cannot be seen with an ordinary eye. We cannot see some organisms using our naked eyes, such as bacteria, protists, viruses, and microscopic fungi. The main parts of a microscope that magnifies are the ocular and the objective lenses. the lamp serves as the light source. In order to see the specimen clearly the stage needs to be adjusted at the right distance from the lens. this is done using the coarse and the fine adjustment knobs. other parts of the microscope such as the base and the arm serve as primary support for the device.
The microscope is primarily designed to magnify the image of objects and, thus, enables one to see objects that cannot ordinarily be seen with the naked eyes. It magnifies objects using a system of lenses in the ocular and the eyepiece. Microscopic organisms such as protists, bacteria, viruses, microscopic fungi and algae can be seen using the microscope. Slides of objects are prepared and placed on the stage of the microscope and the coarse/fine adjustment knobs used to adjust the stage in order to bring the image on the slide into focus through the ocular. A lamp at the base provides the light source for the light microscope while other parts such as the arm, the head, and the base provide supportive functions for the microscope,
The description, features and function of a microscope can be found explained below.
MICROSCOPE:
A microscope is a laboratory tool that is used to magnify images. This allows scientists to study tiny organisms that cannot be seen with the naked eye. We cannot see some organisms using our naked eyes, such as bacteria, protists, viruses, and microscopic fungi. The main parts of a microscope that magnifies are the eye and objective lenses. The lamp serves as the light source. To see the specimen clearly the stage needs to be adjusted at the right distance from the lens and this is done using the coarse and the fine adjustment knobs. Other parts of the microscope such as the base and the arm serve as primary support for the device.Learn more at: https://brainly.com/question/18661784?referrer=searchResults
A vehicle travels 60. km north and then 40. km south. What is its total displacements?
Answer:
20 km north that's the answer hope it helped
Describe a macroscopic properties of a solid
what is it called when when animals release water vapor into the atmosphere
Answer:it’s so they could breathe
Explanation:the water cycle
Temperature Changes (Iron)
Measure the initial temperature of the water to the
nearest 0.1°C. Record in the data table.
Initial temperature of metal =
PC
Initial temperature of water =
"С
Final temperature of both =
27
DONE
26
25
24
23
2
250 ml
Continue
Intro
12 of 15
The temperaturechanges for iron and water is calculated using the formula: Temperature change = Final temperature - Initial temperature.
Measurements of temperatureTemperature measures the degree of hotness or coldness of a body.
In measuring temperature, a thermometer is the instrument used.
To determine temperature changes, the initial and final temperature of the substance is recorded.
The temperature change is calculated using the formula below:
Temperature change = Final temperature - Initial temperature.In the case of an iron at higher temperature dipped in water at lower temperature, the initial and final temperature of both the water and Iron is recorded.
The formula given above is used to calculate the temperature change.
Therefore, temperature change is calculated using the formula: Temperature change = Final temperature - Initial temperature.
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What is the highest main energy level of Cl? How many inner shell electrons does Cl have?
Answer:
The highest energy level in which you would find electrons in a ground state chlorine atom is the third energy level.
Explanation:
The highest energy level in which you would find electrons in a ground state chlorine atom is the third energy level.
During the process of condensation, water vapor does what
Answer: the water molecules become more organized and heat is released into the atmosphere as a result.
Explanation:
Calculate the empirical formula of each of the following substances with the following compositions.
a 3.60 g of magnesium and 10.65 g of chlorine
b 9.1 g of lithium and 10.4 g of oxygen
Explanation:
Note: Molar masses of elements can be found online or in the periodic table.
Moles of Magnesium
= 3.60g / (24.3g/mol) = 0.148mol.
Moles of Chlorine
= 10.65g / (35.45g/mol) = 0.300mol.
Mole ratio of Magnesium to Chlorine
= 0.148mol : 0.300mol = 1 : 2.
Hence we have the empirical formula MgCl2.
Moles of Lithium
= 9.1g / (6.94g/mol) = 1.311mol.
Moles of Oxygen
= 10.4g / (16g/mol) = 0.650mol.
Moles ratio of Lithium to Oxygen
= 1.311mol : 0.650mol = 2 : 1.
Hence we have the empirical formula Li2O.
A box of groceries requires 5,0 newtons of force to lift it up 1.0 meter. How much work is done?
0.0 J
1.0 J
2.0 J
5.0 J
Please help I’ll give Brainliest
