Answer:
Don't touch radioactive waste with bare hands
Don't eat the radioactive thing
Wear protective eyewear
Wear lab coat/gloves
Explanation:
https://ehs.princeton.edu/laboratory-research/radiation-safety/radioactive-materials/handling-radioactive-materials-safely
Princeton article
The diagram shows the molecular structure of butane. What is the chemical
formula for butane?
Butane
H
Н
Hн
н—с-с-с-с-Н
|| []
Н н н Н
А. 4C1ОН
В. С4Н10
С. 4CH10
D. HC4H
Answer: B
Explanation: sorry if I'm too late but i just did this question and that was the right answer
How are cations formed? A. when one or more electrons of an atom disintegrate B. when an atom gains one or more electrons from other atoms C. when an atom shares one or more electrons with another atom D. when an atom loses one or more electrons
Answer:
D
Explanation:
When an atom loses an electron the number of electrons exceeds the number of protons. This means that the negative charge induced by the electrons exceeds the positive charge induced by the protons.
help, please. balance these equations by writing the proper coefficients in the blanks provided.
1. _____Mg + _____O2 --> _____ MgO
2. _____P + _____O2 --> _____ P2O5
3. _____S + _____O2 ---> _____SO2
4. _____Na + _____Cl --> _____NaCl
5. _____CaCO3 --> _____CaO + _____CO2
thank you :)
Answer:
1. 2,1,2
2. 4, 5, 2
3. 1,1,1
4. 1, 1, 1
5. 1, 1, 1
Hope this helps!
Scientists are trying to control the Maillard reaction by?
Answer:
Intervention of Maillard reactions by the addition of natural and synthetic chemical compounds has previously been directed toward removing one of the reactants (the amino groups or the reducing sugars) or adding sulfur-containing compounds, such as sulfur dioxide or N-acetyl cysteine, which inhibit the reactions
Explanation:
CaC2 + 2H2O ⟶ C2H2 + Ca(OH)2
If 32.0g CaC2 are used in this reaction, how many moles of calcium hydroxide are produced?
0.499 mol
Explanation: M(CaC2) = 64.1 g/mol, n= m/M = 32.0 g/ 64.1 g/ mol= 0.499 mol
Amount of Calcium hydroxide Is same
1.
John ground some coffee beans into little pieces. He put them into a coffee filter and poured
800 cm3 of boiling water over them to make a jug of coffee.
coffee filter
Coffee
Beans
ON
jug of coffee
(a) Complete the sentences below. For each sentence, choose one of the following
words.
insoluble
soluble
solution
solvent
(0)
The liquid in the jug is brown because parts of the coffee beans
are
in water.
1 mark
Which of the following is a neutralization reaction?
a
SiCl4 + 4 H2O → H4SiO4 + 4 HC
b
HCl + NaOH → NaCl + H2O
c
6 CO2 + 6 H2O → C6H12O6 + 6 O2
d
2Al + 6HCl → 2AlCl3 + 3H2
Answer:
B
Explanation:
B, Hcl + NaoH = NaCl + H2O
Who's the first person to reach the moon
Answer: Neil Armstrong
Explanation
On July 20, 1969, Neil Armstrong became the first human to step on the moon. He and Aldrin walked around for three hours. They did experiments. They picked up bits of moon dirt and rocksExplanation:
Answer:
In 1969, Neil Armstrong was the first person to reach the moon.
Explanation:
What is the electron configuration of the calcium ion?
Answer: Calcium ion Ca² : 1 s² 2s² 2p ^6 (sorry I don't get 6 similar way as 2) 3s² 3p^6
Also 18 electrons, because Calcium donates two 4s electrons
Explanation:
how many meters are in a kilometer.
Answer:
1,000 meters in 1 kilometer
Explanation:
Which of the following describes how covalent
compounds differ from ionic compounds?
A. ionic bonds form between non metals only. B. ionic bonds are more likely to be gas. C. covalent bonds have a lower melting and boiling point. D. covalent bonds are more likely to be solids
Answer: The answer is C
covalent bonds have a lower melting and boiling point
HOPE THIS HELPS !! IF YOU NEED MORE HELP FEEL FREE TO COMMENT IN THE COMMENT SECTION
There is 10 green marbles and 10 blue marbles in a bag. What is the minimum number of marbles you need to pull out of the bag to be 100% sure that you have two marbles of the same color without looking at the marbles
Answer:
3
Explanation:
3 see below.
Take a much much easier problem that you might actually encounter in your life.
Suppose you have a sock drawer in your room that you haven't had the energy to put in order. Suppose you only look at that drawer when it is pitch black in the room. There are only 2 color socks in there -- red and green. How many socks to you have to pull out to assure that you have 2 of one color when you pull them out.
No cheating!
Three right. Suppose you pull out 1 green and 1 red. The next sock you pull out will have to be one of those 2 colors, right?
El ozono es una sustancia pura cuya molécula está formada por tres átomos de oxígeno, O3. Se encuentra en pequeñas cantidades en la estratosfera formando una ligera capa alrededor de la tierra. El ozono es un filtro para ciertas radiaciones como los rayos ultravioleta que provienen del sol y son muy perjudiciales. Desde hace varias décadas se ha observado una disminución de O3 en el polo sur y comienza a disminuir en el polo norte formando un agujero en esta capa. Qué consecuencias trae para los seres vivos la destrucción de la capa de ozono y cómo podría revertirse este deterioro en dicha capa?
Answer and Explanation:
Dado que la capa de ozono protege la vida en la Tierra actuando como filtro de radiaciones nocivas del Sol, su destrucción trae como consecuencia un aumento de la radiacion UV que puede provocar:
- daños en animales y en el hombre: aumento de casos de cáncer de piel, cataratas en ojos, debilitamiento del sistema inmune.
- alteración en el desarrollo de especies vegetales .
- contribución al efecto invernadero y al calentamiento global.
Para revertir el deterioro de la capa de ozono, podemos tomar algunas medidas:
- no utilizar productos que contengan clorofluorocarbonos (CFC), como por ejemplo algunos aerosoles.
- evitar el uso de productos que contengan halones
- evitar el uso de hidrofluorcarbonos (HFCF)
Estos compuestos químicos reaccionan y destruyen el ozono, por lo que si evitamos utilizarlos, con el tiempo la capa de ozono se recuperará.
khan academy sucks. can someone answer this? :)
Please help will mark Brainliest!!!
How many grams of HCL (hydrochloric acid) can you make with 50 grams of Cl.
H + Cl -> HCL is the balanced equation
Answer:
Explanation:
It's 21 /
How do I balance Ga(NO3)3 + Hg2(Cl2) -> Hg2(NO3)2 + Ga(Cl)3
Answer:
2Ga(OH)3 + 3Hg2Cl2 → 6Hg(OH) + 2GaCl3
Explanation:
Answer: 2Ga(OH)3 + 3Hg2Cl2 → 6Hg(OH) + 2GaCl3
reaction type: Double Displacement
Please help this is due soon and I’ll mark you brainiest if you can help
Answer:
I think it's either A or D I'm not sure hope that I helped you.
I need help please i need to turn this in today
Answer:
Natural phenomena such as melting glaciers is due to the rise in temperature. This will result to extinction of flora and fauna. Moreover it can cause extreme flooding due to rise in water level in other water bodies such as rivers, lakes
Al derretirse los cubos de hielo cómo será ahora la fuerza de atracción con respecto a la fuerza de repulsión
Answer:
La fuerza de atracción en el hielo sólido, que es un compuesto molecular, se debe al enlace de hidrógeno (que es la fuerza intermolecular más fuerte) entre las moléculas individuales de agua, por lo tanto, el hielo sólido es bastante fuerte y se mantiene en una estructura rígida.
Cuando el hielo se calienta, las moléculas absorben suficiente energía y, en lugar de solo la vibración del hidrógeno dentro de un área muy pequeña, los enlaces de hidrógeno se doblan y se estiran, con los ángulos y la longitud de los enlaces oscilando dentro de los rangos esperados.
Como tal, las fuerzas de atracción en el agua líquida son menores que las del hielo y las fuerzas de repulsión entre cargas similares tienen un efecto mayor en la plasticidad del agua que el hielo.
Explanation:
PLEASE HELP I WILL MARK YOU BRAINLIEST !!If you react 4.25 moles of FeCl2, how many moles of Cl2 did you also react?
ILL GIVE 12 POINTS TOO PLEASE IM BEGGING FOR HELPPPPP
What is a force is needed to stop a child form slipping on ice
Answer:
Friction. Hope I helped.
LOSPICNOMEWTROS SON INSTRUMENTOS EMPLEADOS PARA CALCULAR DENSIDADES DE SUSTANCIAS LIQUIDAS. SE REALIZO UN EXPERIMENTO PARA DETERMINAR LA DENSIDAD DE UNA SUSTANCIA DESCONOCIDA EN EL LABORATORIO ENCONTRANDO LOS SIGUIENTES VALORES (Picnómetro vacío 8,5g) (Picnómetro lleno 25g) (Capacidad Picnómetro 25mL) . CUAL ES LA DENSIDAD DE LA SOLUCIÓN
Answer:
0.66g/mL
Explanation:
La densidad es una propiedad de la materia definida como la masa de una sustancia en un determinado volumen.
En este problema, podemos hallar la densidad sabiendo que la diferencia de masas del pic vacío y el pic lleno es la masa de la solución y que el volumen que ocupa es de 25mL:
Masa solución:
25g - 8.5g = 16.5g
Así, la densidad será:
16.5g / 25mL =
0.66g/mLwhat are 2 products of an acid base neutralization reaction
Water and NaCI
water and salt
a neutral solution and water
a different acid and base
Answer:
a different acid and base
Explanation:
What is the percent composition of oxygen in Iron(III) oxide? (Round to three sig figs)
Fe2O3 159.7g/mol
Fe =55.85 x 2 =111.7 g/mol
O = 16.00 x 3 = 48.00 g/mol
____% O
30.1%
do not ask why it just is.
The different between molecules in a liquid and molecules in a gas
Answer:
Gases, liquids and solids are all made up of atoms, molecules, and/or ions, but the behaviors of these particles differ in the three phases. ... gas are well separated with no regular arrangement. liquid are close together with no regular arrangement. solid are tightly packed, usually in a regular pattern.
help please don’t understand
hello sister the answer is very easy it is 2 miles of oxygen
Which is which, acid or base?
Answer:
HCI - BASE
KOH - ACID
H2SO4 - ACID
H30 + :- BASE
NAOH - ACID
Given two balanced equations, each representing a reaction:
(1) Equation 1 shows 2.2 X 105 times more energy being absorbed. (\
2) Equation 2 shows 2.2 X 105 times more energy being absorbed.
(3) Equation 2 shows 2.2 X 105 times more energy being released.
(4) Equation 1 shows 2.2 X 105 times more energy being released.
Answer:
There is a hack in forms that forms gives u the answer hold ctrl + u, and scrool to the bottom he read the part with the question and there will be an answer.
Mark as brainliest if im right good luck
Using the diagram, which two planes would intersect in HG?
Answer please .. :)
Answer:
I think D
Explanation:
it has both H and G in the planes.
which has the higher temperature? An iceberg or a steaming cup of water?