Fireworks need an oxidizer, fuel, and a chemical mixture to produce the colour in the sky. Therefore, option (A) is correct.
How do colours come from firecrackers?The chemicals which are used in crackers are the main reason for the colours in the sky. The colours in the fireworks come from different compounds which are the binder and the colourant. The colourant chemicals provide the colours in the firework while the binder is the agent that binds the fuel and is responsible to burn up the colourant in the firework.
The colourants in the firecrackers can be generated with the use of various metallic salts. These salts can be defined as iconic compounds which possess an anion or an acid and a cation or a base. The metal salts are responsible for generating intense colours when they are burned.
For example, if use calcium salts in the firework will produce an orange colour, and copper salts will produce a bright blue colour.
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What is the mass of oxygen atoms in 0. 380 mol fe(co)5?.
Answer:39+30
Explanation:
Silver, Chromium and Copper are these type of elements _____
Answer:
Group 11
Explanation:
Group 11, by modern IUPAC numbering, is a group of chemical elements in the periodic table, consisting of copper (Cu), silver (Ag), and gold (Au).
Answer:
silver, chromium and copper are metal type of element
How to tell if a reaction is exothermic.
Answer:
If the reaction loses heat it is exothermic.
Name the elements that make the phone vibrate.
Answer:
someone calling you, notifications or apps
Explanation:
Hurry Answer for a Brainlist
Answer:
The most accurate and percise player was Josh
Match the vocabulary word to its definition.
neutron
the central part of the atom containing
protons and neutrons
proton
a negatively charged particle that orbits
the nucleus of an atom
nucleus
a neutral particle located in the nucleus
of an atom
electron cloud
a positively charged particle located in
the nucleus of an atom
electron
the area of the atom surrounding the
nucleus where electrons can be found
Intro
Done
Answer:
neutron --> a neutral particle located in the nucleus of an atomproton --> a positively charged particle located in the nucleus of an atomnucleus --> the central part of the atom containing protons and neutronselectron cloud --> the area of the atom surrounding the nucleus where electrons can be foundelectron --> a negatively charged particle that orbits the nucleus of an atomCalculate the molecular mass of the element
They give:H=1,AI=27,S=32,0=16,Cu=64,P=31,Mg=24,N=14,Na=23
Answer:
Cu3 (PO4)2
3×64 + 2×(31+ 4×16)
192 + 2×(31+64)
192 + 2×(95)
192+190
=382g
what will happen to the temperature if heat is added to an object the temperature is
Answer:
The temperature will rise as a matter of fact
Explanation:
Heat is the type of energy that travels from one point to another owing to temperature difference.
how well did the landmases fit together this time
Answer:
The theory of continental drift is most associated with the scientist Alfred Wegener. In the early 20th century, Wegener published a paper explaining his theory that the continental landmasses were “drifting” across the Earth, sometimes plowing through oceans and into each other. He called this movement continental drift.
Explanation:
Soil forms layers when mixed with water. sand is found above what ?
Answer:
Explanation:
Clay:)Swimming pool structures and structural _____ [680.26(B)(1) and (B)(2)] shall not be used as a grounding electrode.
A grounding electrode is any object that directly links to the earth. They are most times used to divert electricity from the elements.
Swimming pool structures and structural reinforcing steel. 250.52(B)(3), [680.26(B)(1), and (B)(2)] shall not be used as a grounding electrode.In code 250.52(B)(3) it is clearly specified that the bonding grid and reinforcing steel that is related to a pool should not be used as grounding electrodes.
This is essential because when a metal that lies beneath a swimming pool is used as a grounding electrode, current from nearby electrical systems can be introduced into the pool.
This could cause the electrocution of anybody in the swimming pool at that time.
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witch one is a gas metal or ion-----sodium, potassium, hydrogen, lithium
Answer: Lithium, sodium and potassium are in the same group, alkali metals or Group 1A, because the Periodic Table is arranged according to the Periodic Law which states that chemical properties repeat at regular intervals.
Explanation: hope it helps :)
what is the main use of charcol
Answer:
Charcoal is produced by the incomplete combustion of plant or animal products. The major use of charcoal is for outdoor cooking. The second largest use of charcoal is in industrial applications in the form of activated charcoal. The activation process involves heating the charcoal subjecting it to steam or treating with a chemical to both remove substances that have adhered to it as well as break it down into finer particles and thus increase the surface area. Activated carbon has been used for its adsorptive properties as a ‘universal antidote’ in cases of poisonings, as a filter aid agent, and in decolorization processes.
What is the acceleration of a 10 kg pushed by a 5N force
Answer:
0.5 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
[tex]a = \frac{f}{m} \\ [/tex]
f is the force
m is the mass
From the question we have
[tex]a = \frac{5}{10} = \frac{1}{2} = 0.5 \\ [/tex]
We have the final answer as
0.5 m/s²Hope this helps you
......................
Answer:
preciate you
Explanation:
does anyone know how to find the electron configuration of an element without using a periodic table?? group and period is already given
help asap for brainlist
Answer:
Function A: +3
Function B: +2
y intercept is greater in Function B, the value is 16
Explanation:
Which polymer structure should be used if a strong and heat - resistant adhesive is required?
1. Linear
2. Branched
3. Networked
4 . Cross - linked
Cross-linked polymers are strong and heat - resistant hence they can be used for this purpose.
A polymer is obtained by the combination of small molecules called monomers. A polymer consists of a regular repeating unit of small molecules called monomers.
A cross-linked polymer is a polymer in which covalent bonds are used to join polymer chains together. Cross-linked polymers are strong and heat - resistant hence they can be used for this purpose.
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what are remained on the cloth? explain your answer.
Answer:
on which cloth. since the sub is chemistry. which chemical or mixture or compound
Does the sound wave above experience a change in pitch or loudness? Why? (PLS HELP 60 ILL PNTS AND ILL GIVE BRAINIEST!!
Answer:
Explanation:
Amplitude, or the size of the wave height, affects the loudness. Larger the amplitude, the louder the volume. Period, or the time it takes for the wave to complete one round, determines the pitch. Shorter period (or higher frequency) means higher pitch.
What is the formula for this ionic crystal?
Answer:
Al₄O₅
Explanation:
The key at the bottom tells us the blue spheres are oxygen atoms and the red spheres are aluminum atoms. By counting, there are 4 aluminum atoms and 5 oxygen atoms. Therefore, the formula is Al₄O₅.
a 35.66g sample of copper is heated using 600j of energy. if the original temperature of the copper is 85C what is its final temperature?
Specific heat of copper: 0.38j/gC
A -6.39
B 6.39
C -78.61
D 91.4
This problem is providing the mass, energy, initial temperature and specific heat of a sample of copper that is required to calculate the final temperature.
Thus, we recall the general heat equation:
[tex]Q=mC(T_f-T_i)\\[/tex]
Which has to be solved for the final temperature, [tex]T_f[/tex] as follows:
[tex]T_f=T_i+\frac{Q}{mC}[/tex]
Finally, we plug in the numbers to obtain:
[tex]T_f=85\°C+\frac{600J}{35.66g*0.38\frac{J}{g\°C} } \\\\T_f=129.3\°C[/tex]
However, this result is not given in the choices.
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https://brainly.com/question/14383794what are some advantages and disadvantages in acid rain management, in crop fields
Answer:
Disadvantages of acid rain:
• Acid rain affects the fresh water ponds and lakes and destroys the aquatic life as some species of fishes are rare and may be extinct
• it can affect the trees particularly those that are high altitude
• It can damage historical monuments and buildings
•soil can be affected and can lead to deaths of good microbes
Advantages of acid rain:
• it makes holes in limestone below ground, which creates caves and places to store groundwater, as well as providing habitat for some species
• But the new study shows that sulfuric in acid may have benefits, limiting global warming by counteracting the natural production of methane gases by microbes in wetland areas.
Explanation:
Someboyd please helppppppp!!!
Sodium: Na+
Iron (II): Fe2+
Iron (III): Fe3+
Titanium (IV): Ti4+
Vanadium (V): V5+
Ammonium: NH4+
I hope this helps! :)
Pls help me will give brainliest.
Where is convection happening on Earth?
A. Atmosphere
B. Earth's outer core
C. Earth's mantle
D. Oceans
E. All of the above I
Answer:
C. Earth's Mantle
Explanation:
Answer:
C
Explanation:
Earth's mantle is the correct answer
what is the name of the high-energy compound that cells use to fuel chemical reactions?
Answer: Adenosine triphosphate, or ATP, is the primary carrier of energy in cells. The water-mediated reaction known as hydrolysis releases energy from the chemical bonds in ATP to fuel cellular processes.
Explanation:
Does chlorine have a smaller ionic radius than soium.
Answer:
sodium atoms are much larger than chlorine atoms but in case of sodium ions they are much smaller thqn chlorine ions
c. 0.0023 moles of CO2
Answer:
0.1gram
Explanation:
mass = no of moles × molar mass
how many moles of hydrogen are there in one mole of h2o?
Add 2 teaspoons of baking soda and 2 teaspoons of citric acid to the foam cup. Add the half cup of water to the cup and stir. What is the temperature?
Answer:
Test for carbon dioxide gas.
The reaction between baking soda and citric acid will form sodium ions, citric acid ions, carbon dioxide gas, and water. So all you have to do is add the gas produced (by gas displacement method or something) and test whether the gas is carbon dioxide, with lime water or other methods like hydrogencarbonate indicator. Hope this helped!
Explanation:
Answer:
depends on amount, but the reaction's endothermic (meaning its cold, absorbs heat from surroundings)
I hope it helps.