Answer:
When radioactive atoms decay, they release energy in the form of ionizing radiation (alpha particles, beta particles and/or gamma rays). The energy is called ionizing radiation because it has enough energy to knock tightly bound electrons from an atom's orbit. This causes the atom to become a charged ion
(SCIENCE)Which conditions are needed for a hurricane to form?
A.
warm, dry air rising over warm areas on the land
B.
warm, dry air rising over warm areas in the ocean
C.
warm, moist air rising over warm areas on the land
D.
warm, moist air rising over warm areas in the ocean
Answer:
I think the answer is D, but if I'm wrong PLEASE TELL ME!
Explanation:
For one hurricane to form, there needs to be warm ocean water and moist, humid air in the region. When humid air is flowing upward at a zone of low pressure over warm ocean water, the water is released from the air as creating the clouds of the storm. As it rises, the air in a hurricane rotates.
how many moles are there in 302 grams of Ca2N2
Answer:
2.0371352212585085
Explanation:
down there (pls hurryy!!)
Answer:
D. is the correct answer.
Answer:
There are many changes that can increase the rate of chemical reaction but the most significant is
Adding a catalyst to the reaction mixture.
The other changes that can increase the rate of chemical reaction are;
Change in temperature (increasing the temperature)
Change of pressure (higher pressure)
pH of the solution (optimum pH)
Change in concentration (Increasing the concentration of the reactants)
HELP NOW PLEASE NO LINKS HELP ASAP RIGHT NOW.
How many moles of hydrogen can be produced with 0.16 moles of water
Answer:
2
Explanation:
A mole is a number of particles equal to the constant of Avogrado (6,02214*10^23). So by talking about moles we are talking about a number of molecules. If we look at the reaction described 2 H2 + O2 → 2 H2O you see that two hydrogen molecules can react whit one oxygen molecule to produce two water molecules. Because a mol is a certain number of molecules it is easy to calculate around chemical reactions. So we have 4 moles of hydrogen, and two moles of oxygen. Enough building blocks to build a total of two moles of water
Calculate the number of moles of Al2O3 that are produced when 1.2 mol of FeO is used in the following reaction.
2Al(s) + 3FeO(s) -> 3Fe(s) + Al2O3(s)
A.
3.6 mol Al2O3
B.
3.6 mol Fe
C.
0.40 mol Fe
D.
0.40 mol Al2O3
E.
0.60 mol Al2O3
F.
2.4 mol Al2O3
Answer:
D
Explanation:
Write a formula that you can use in order to calculate the number of neutrons in an atom:
Number of Neutrons=____________________________
Answer:
number of neutrons = mass number - number of protons
Calculate the specific heat capacity of the unknown metal given the
following information; the mass of the metal is 225 g, the temperature
raises by 13C and the energy absorbed was 1363 joules.
A. 0.466 j/gC
B.1.02j/gC
C.0.96 j/gC
D.2.14 j/gC
Answer: The specific heat capacity of the unknown metal given is [tex]0.466 J/g^{o}C[/tex].
Explanation:
Given: Mass = 225 g
Change in temperature = [tex]13^{o}C[/tex]
Heat energy = 1363 J
The formula used to calculate specific heat is as follows.
[tex]q = m \times C \times \Delta T[/tex]
where,
q = heat energy
m = mass of substance
C = specific heat
[tex]\Delta T[/tex] = change in temperature
Substitute the values into above formula as follows.
[tex]q = m \times C \times \Delta T\\1363 J = 225 g \times C \times 13^{o}C\\C = \frac{1363 J}{225 g \times 13^{o}C}\\= 0.466 J/g^{o}C[/tex]
Thus, we can conclude that the specific heat capacity of the unknown metal given is [tex]0.466 J/g^{o}C[/tex].
¿Qué es una fuente de luz secundaria?
Answer:
Las fuentes secundarias son testimonios de segunda mano elaborados con posterioridad a los hechos ocurridos y basados en la información de las fuentes primarias, por ejemplo: libros y revistas, películas, video-documentales, series televisivas, textos escolares y mapas temáticos.
Answer:
Las fuentes de luz secundarias son aquellas que reflejan la luz que produce otra fuente. Por ejemplo: la luz de la luna (refleja la luz que produce el Sol), un espejo.
Explanation:
What is the mass of oxygen gas (O2) needed when 8.75 x 1070 molecules of methane (CH4) combust to form carbon dioxide (CO2)? (Choose closest answer)
CH4 + 2O2 -> CO2(g) + 2H2O
A.
8.43 x 1093 grams
B.
9.299 x 1048 grams
C.
2.32 x 103 grams
D.
9.08 grams
E.
my mom
10. Which of the following consists of two or more pure substances?
A. ice
B. oxygen
C. soda pop
D. ammonia
Describethe role of trees and photosynthesis in the carbon cycle
Answer:
Tree's absorb so much carbon dioxide from the atmosphere and store the carbon in their biomass
What is the sum of the coefficients for the balanced chemical equation below ?
Answer:
9
[tex]4X \: + \: 3Y _{2} \: → \: 2X _{2} Y _{3}[/tex]
Sum = 4+3+2
=9
I can't get this Question can you help me, please :)
Answer:
d.
Explanation:
more heat energy
A person walks 2 miles in 30 minutes. Figure out how many feet per second they traveled.
Answer:
5.8667 ft/s
Explanation:
If a screwdriver was used to pry open a door, where would scratches/striations be found?
Answer: Most likely around the knob area or by the bolts that hold the door up.
Explanation:
If you attempted to pry open a locked window with a screwdriver, the screwdriver would leave a tool mark on the window and windowsill.
The impressions made by a tool when it comes in contact with an object are called as tool marks. These tool marks exhibit a variety of impressions depending upon the type of tool, its shape and its use. They are classified into different types depending upon the force with which they are made.
The study of tool marks is very useful in forensic science which includes information about the analysis of tool marks at the crime scene and in the laboratory, the interpretation and assessment of challenges for examination and interpretation and also the way in which tool mark evidence can be presented in a courtroom.
Learn more about Tool marks, here:
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What do greenhouse gases do in our atmosphere?
Explanation:
Greenhouse gases are gases in Earth's atmosphere that trap heat. They let sunlight pass through the atmosphere, but they prevent the heat that the sunlight brings from leaving the atmosphere.
A student designed an experiment to test the effect on the magnitude of the magnetic field that is generated around the wire loop. The student increased the current that passes through the wire and tests the magnitude of the magnetic force that is generated. The experimental setup is shown here. Which statements accurately describe this experimental design? Select ALL that apply. A) The student's dependent variable is the size of the wire loop. B) The student's independent variable is the size of the wire loop. C) The student's dependent variable is the magnitude of the magnetic field that is generated. D) The student's independent variable is the magnitude of the magnetic field that is generated. E) The student's independent variable is the amount of current that is being passed through the wire.
Answer:
C
Explanation:
¿Cómo se llama el proceso en donde se transforma el oxígeno en dióxido de carbono
Answer:
respiración
Explanation:
Can someone pls tell what to put in 6 and 7 pls no links ???
Complete chemical equation of the reaction between calcium hydrogen carbonate and hydrochloric acid
Answer:
..
Explanation:
Answer:
CaCO3+ HCl -> CaCl2 + CO2 + H2O
Explanation:
Please mark brainliest
I need this ASAP
A young scientist wants to focus on drug creation. What is one of the first
things he should do?
O A. Look into trends of various diseases and their effects on society.
B. Research available drugs for treating illnesses such as cancer and
heart disease, as well as the side effects of these drugs.
C. Test a composite material in the lab to see how it can be
improved
D. Make a plan for how to conquer a disease with drugs.
Answer:
A :))
Explanation:
They should look into the different types of diseases and their effects on society before anything else so they know what type of drugs he should look into.
What may cause a species to become less genetically diverse?
A. Isolation from members of its species
B. Low population numbers
C. Both isolation and low population numbers
D. None of these
"science"
Answer:
b i think im not fully sure
Explanation:
Answer:
C- Both isolation and low population
Explanation:
90 percent sure
Can someone tell me how to draw a atomic model for Cd
Explanation:
there you go you can just look up atomic model for CD and click images
What is the mass number of an atom that has 12 neutrons and 11 protons?
24
12
11
23
Answer:
23
Explanation:
Unit 3: Energy
3.2 Forms of Energy Worksheet
Watch this Video ,fill the table below and answer the questions.
Form
Description
Type
Example
1.
2.
3.
4.
5.
6.
7.
8. What forms of energy does a burning candle give out?
9. What questions do you have about energy?
Answer:
What forms of energy does a burning candle give out?
The burning candle is converting chemical energy—stored in the hydrocarbon bonds in the wax—into thermal (heat) and radiant (light) energy.What questions do you have about energy?
Can momentum be hidden to human eyes like how kinetic energy can be hidden as heat?Can you go fast enough to get enough mass to become a black hole?How can a material at a certain temperature have all of its molecules at the same energy?How can we travel to the past?Se tiene una solución de vinagre cuya masa es de 360 gramos y densidad 0,9 g/ml. Si el porcentaje en volumen de soluto es 8%, ¿cuál es el volumen del soluto (ácido acético)?
Answer:
a
Explanation:
4) When solid sodium nitrate is heated, solid sodium nitrite and oxygen gas
(02) are produced. Write the balanced chemical equation for this chemical
reaction using the correct chemical formulas and include conditions (s, l, g, or
aq). Put your answer in the box below.
Write the balanced chemical equation and state what type of chemical reaction this is.
Answer: The balanced chemical equation is [tex]2NaNO_{3}(s) + Heat \rightarrow 2NaNO_{2}(s) + O_{2}(g)[/tex] and it is a decomposition chemical reaction.
Explanation:
A chemical reaction in which single compound is decomposed into two or more species is called a decomposition reaction.
For example, [tex]NaNO_{3}(s) + Heat \rightarrow NaNO_{2}(s) + O_{2}(g)[/tex]
As the compound [tex]NaNO_{3}[/tex] is decomposing to given two different substances. So, it is a decomposition reaction.
Here, the number of atoms on reactant side are as follows.
Na = 1N = 1O = 3The number of atoms on product side are as follows.
Na = 1N = 1O = 4To balance this equation, multiply [tex]NaNO_{3}[/tex] by 2 on reactant side and multiply [tex]NaNO_{2}[/tex] by 2 on product side. Therefore, the equation will be rewritten as follows.
[tex]2NaNO_{3}(s) + Heat \rightarrow 2NaNO_{2}(s) + O_{2}(g)[/tex]
Here, number of atoms on reactant side are as follows.
Na = 2N = 2O = 6The number of atoms on product side are as follows.
Na = 2N = 2O = 6Hence, this equation is balanced.
Thus, we can conclude that the balanced chemical equation is [tex]2NaNO_{3}(s) + Heat \rightarrow 2NaNO_{2}(s) + O_{2}(g)[/tex] and it is a decomposition chemical reaction.
A dog runs 6 km in 30 minutes. What is the dog’s average speed in km/h?
here's your solution
==> distance covered = 6 km
==> time taken = 30 min
==> time in hour = 30/60 = 1/2hr
= speed = distance/time
==> speed = (6)/(1/2)
==> speed = 12 km/hr
hope it helps
When a dog run 6 km in 30 minutes then dogs average speed will be 12 km/h.
What is average speed?The average speed of something is computed by dividing the number distance travelled by the total time it took to travel that distance. Average speed can be determined by the formula:
V=d/T
where, V is average speed , d is distance and T is time.
It is given that , d= 6 km and T= 30 minutes(0.5 h).
Calculation of average speed is show below:
Now, puts the value of given data in average speed formula.
Average speed(V )= 6/ 0.5 = 12 km/h
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What is one benefit that nuclear power plants currently provide for our environment? O A. They provide energy while increasing natural gas pollution. B. They provide energy while increasing biomass by-products. OC. They provide energy without increasing carbon dioxide emissions. OD. They provide energy without increasing nuclear waste.