I beg you please please I beg you help me please I’m litterly crying please :(
Answers
Related Questions
how many atoms does Mg(NO3)2 have thanks
Answers
Answer: Magnesium nitrate compound contains one atom for magnesium, two atoms for nitrogen, and six atoms for oxygen.
CREDIT safsaf
3. Students were measuring distances and found one to be 2.04 m. When they asked the teacher if their measurement was correct, the teacher said, “Actually, it is 2.16 m.” What is the percent error?
Answers
Answer:
5.56
Explanation:
The inflation of airbags is due to the breakdown of a single chemical substance into two separate substances. Two molecules of sodium azide (NaN3) break down into sodium (Na) and nitrogen gas (N2) during the reaction. How many sodium (Na) atoms are produced in the reaction? 1 Na atom 2 Na atoms 3 Na atoms
Answers
Answer:
The correct answer is 2 Na atoms
Explanation:
To determine the number of sodium atoms produced in this reaction, the reaction described in the question must be written out in an equation and then balanced
2NaN₃ ⇒ 2Na + 3N₂
From the equation above, it can be deduced that the number of sodium atoms produced in the reaction described in the question is 2
Answer:
C) 2 Na atoms
Explanation:
Which of the following pairs of elements belong to the same period?
Answers
Answer:
He and Ar
Explanation:
HELPP PLEASE
Isotopes have different number of........... *
Protons
Electrons
Neutrons
Protons and Neutrons
Answers
Answer:
neutrons. they have the number of protons and electrons
What satement is true the about atomic mass?
Answers
Answer:
Explanation:
A. It can be greater than the atomic number
Someone help me plz.
In each of the following pairs, circle the form of radiation with the LONGER WAVELENGTH:
A. red light or blue light
B. microwaves or radiowaves
C. infrared radiation or red light
D. gamma rays or UV rays
Answers
Answer:
In the first one in a it is red light in b it is radio waves in c it is infrared radiation and d is UV radiation
Explanation:
The forms of radiation from the pairs listed that have longer wavelength are :
A) Red light
B) Radio waves
C) Infrared radiation
D) UV rays
Red light have a wavelength between 650 to 720 nm while a Blue light has a wavelength of 380nm to 500nm which makes it to produce a high energy visible light.( HEV ) light. therefore the Red light has a longer wavelength.
The wavelength of a microwave is approximately 30 centimeters to 1 millimeter, which makes it shorter than the wavelength of a radio wave ( shortest wavelength in the electromagnetic spectrum.
Hence we can conclude that The forms of radiation from the pairs listed that have longer wavelength are A) Red light B) Radio waves C) Infrared radiation D) UV rays
Learn more about the electromagnetic spectrum : https://brainly.com/question/4533497
You are a high school track & field coach and you have a young female athlete who is running a competitive mile pace (5:20). This would make her competitive at the state and national level. You want to help this athlete to maintain and even increase her competitive potential. What would you do?
Answers
Answer:
By ensuring she is giving speed endurance training
Explanation:
Speed endurance training would be the most ideal in helping an athlete to maintain and even increase her competitive potential.
The speed endurance training would help the athlete maintain and attain a high speed for a longer duration of time.
This would make the athlete get used to running an improved time for much longer distances.
What is the process by which new oceanic crust is added?
A Seafloor Spreading
B) Earthquakes
C) Trenches
D) Plate Tectonics
Answers
Answer: A
Explanation:
Answer:
A.Seafloor spreading
Explanation:
Match the vocabulary words with the correct definitions.
1.
equation
domain
3.
the variable representing the second elements of the
ordered pairs in a function; the outputs
2. the independent value, or x value
a relation where for any given input value there is only one
output value
the variable representing the first elements of the ordered
4.
pairs in a function; the inputs
a mathematical statement that shows two expressions are
5.
equal; has an equal sign
dependent variable
independent variable
function
Answers
Answer:
5 and 2 I think.
Explanation:
[tex]\\ \\[/tex]HOPE THIS HELPS!!Answer:
i just wanted to say that the other person really did not help
Explanation:
Which of the following is the end product of a natural
radioactive series?
Answers
Answer:
Lead
Explanation:
Lead (Pb) is the end product of every natural radioactive series.
Which cell organelle controls the activities for the cell?
Answers
Answer:
[tex]the \: nucleus \:[/tex]
Explanation:
[tex]the \: nucleus \: is \: organelle \: that \: controls \\ \:a ll \: cellular \: activities.[/tex]
How many atoks are in each element sampke? 16.5 g Sr, 26.5 g Fe, 7.73 g Bi, 36.4 g P
Answers
Answer:
16.5gm of Sr(strontium) has 1.12 x10^23 atoms...26.5 gm of Fe(iron) has 2.84 x10^23.... 7.73 gm of Bismuth has 2.22 x10^22.....36.4gm of Phosphorus has 7.06 x10^23
Explanation:
by the formula,
Moles=[tex]\frac{no of atoms}{Avogadro's No}[/tex]
you could find moles by
Moles = given mass/atomic mass
Put the value of moles and multiply it by Avogadro's no you will get the following answers
A. How many molecules of sugar are in 20.5 g of sugar?
Answers
Answer:
By definition, one mole (one gram molecular weight) of any substance, contains Avogadro’s number of particles; atoms if you are discussing an element, or molecules if a compound. Avogadro’s number has been determined by several methods, all of the accepted values lie within a range of +-1% about the value of 6.022045 x 10^23/gm. That is a large number, in this case approximately; 602,204,500,000,000,000,000,000 molecules of glucose.
3. Except for the bolt, note the difference between the calculated volumes and the volume
found by the displacement method. Which method is more accurate? Why?
Answers
Answer:
Yes Because the calculated volume is more accurate because you are able to measure the smaller dimensions.
~Apex lab
Autism is a disability that results from a disorder in the central nervous system. It has been speculated that the increasing number of cases of autism in recent years is due to the increase in the number of vaccinations given to young children. What might be another possible explanation for this phenomenon?
Answers
Answer:
Explanation:
As described in the question, autism is a disability that arises from a disorder in the central nervous system which is actually characterized by abnormality in the brain structure and then function. Autism is known for symptoms such as challenges with communication and interaction and some obsessive behaviors. While there is generally no known scientific cause for autism but trends have suggested that vaccination in young children causes autism.
However, genes could also be involved in this phenomenon because there have been reports of unusual genetic sequence in children that have autism. Hence, there is a possibility that vaccination actually triggers this genetic sequence which is then expressed as autism in the children.
Please note this isn't a scientific fact and just a possibility as requested in the question.
AgF (aq) + KNO3 (aq) →
Answers
Answer:
AgF (aq) + KNO₃ (aq) → AgNO₃(aq) + KF(aq)
Explanation:
AgF (aq) + KNO₃ (aq) →
The products from the equation above can be obtained as follow:
1. AgF and KNO₃ will dissociate in solution as shown below:
AgF (aq) —> Ag⁺(aq) + F¯(aq)
KNO₃ (aq) → K⁺(aq) + NO₃¯(aq)
2. A double displacement reaction will occur between AgF and KNO₃ as illustrated below:
AgF (aq) + KNO₃ (aq) →
Ag⁺(aq) + F¯(aq) + K⁺(aq) + NO₃¯(aq) → Ag⁺NO₃¯(aq) + K⁺F¯(aq)
AgF (aq) + KNO₃ (aq) → AgNO₃(aq) + KF(aq)
A careful observation of the above equation shows that the equation is balanced.
What is a hypothesis?
O proof and evidence of a scientific fact
O a question about nature and how it works
a series of steps to carry out an experiment
O a possible explanation of or answer to a scientific question
Answers
Answer:
The 4th option
a possible explanation of or answer to a scientific question
Explanation:
Answer:
A hypothesis is a question about naturre and how it works
How do homes lose thermal energy?
I need TWO reasons on why we want to reduce the thermal loose.
Answers
Answer:
Poorly insulated attics, windows not being insulated in the winter
Explanation:
One reason is so we do not get cold in the winter and the reason we have a home is to protect us from the weather or put a shelter above us. Second reason is so we don't get hypothermia in the winter time.
Find the mass of an object that has a density of 1.5g/cm^3 and has a volume of 8cm^3 power
Answers
Answer:
The answer is 12 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question
volume = 8 cm³
density = 1.5 g/cm³
We have
mass = 8 × 1.5
We have the final answer as
12 gHope this helps you
The metric unit of force is the Newton (N) , which is kg⋅m/s2 .
Convert 10 kg⋅cm/s2 to Newtons.
OPTIONS:
A. 1×10−1 N
B. 1×10−2 N
C. 1×10−5 N
D. 1×10−6 N
Answers
Answer:
1×10^-1 N
I took the quiz
Answer:
A
Explanation:
I just took the test.
A. Lithium and cadmium are in the mixture. Strontium is not in the mixture.B. Lithium and strontium are in the mixture. Cadmium is not in the mixture.C. Cadmium and strontium are in the mixture. Lithium is not in the mixture.D. All of the shown elements are present in the mixture.
Answers
Answer:
I think it's Sr and Li...
Explanation:
You just line up the elements to the mixture and whatever fits with all of the charts are the elements present in the mixture.
Question 4 (4 points)
Special bonds formed because of electrostatic interaction between molecules are called
A.intermolecular forces
B. intramolecular forces
C.permanent forces
D.magnetic forces
Answers
Answer:
A. intermolecular forces.
Identify arrows pointing to nonbonding electrons.
Answers
Answer:
C
Explanation:
Yessir
Why does oil float and not sink?
Answers
Answer:
because it has more density than water
Answer:
This is because oil is less dense than water and therefore it floats to the surface.
Do you believe that in 2020 every single American, regardless of race, sex, or income level, has an equal opportunity to achieve his/her American Dream? Why or why not?
Answers
Answer:
Tbh i rlly dont think that many will. Most may succeed in doing so. But i mean come on its 2020 anything can happen.
Explanation:
Answer:
yes 100% what reasons r there to not tho
Explanation:
FUDQPITJ8PXzpl6qZcrfQD6A/viewform?hr_submission=chklyut_jwBE
Potassium (K) is a soft, silver, solid metal. It is widely found in food we eat.
11
Na
22.990
Sodium
19
K
39.098
Potassium
37
Rb
85.488
Rubidium
Which statement correctly and accurately describes atoms of Rubidium?
Answers
Answer:
What is all that stuff
Explanation:
11) Identify the number of elements and the number of atoms present in the chemical formula. NaHCO ²
4; 6
5; 6
4,5
3; 5
Answers
Answer:
4;6
Explanation:
because there are four elements
What kind of graph would use for this data? The months of the year and the amount of rainfall, and why
Answers
Answer:
A Desert Climatogram is a graph that shows the temperature and rainfall, for each month in the year, for the Desert.
Explanation:
Science Graded Assignment Help. Extra points! Due by: 29th of October
Answers
2. An organ is a group of several tissues working together while an organ system is a group of Organs that work together to perform functions
3. Your organ system works at a level that keeps you body functioning constantly.ex respiratory system, circulatory system work together to provide oxygen
4. I’m sorry but I don’t know this one :(
5. When the balance your organ system creates stops working, your health as a whole will suffer.