plz help!!
How many total oxygen atoms are present in the reaction below? (note that it is unbalanced)
C3H7OH + O2 -> CO2 + H2O
please help i will mark brainlist
Answer:
432cm³
Explanation:
Given parameters:
Length = 12cm
Height = 6cm
Width = 6cm
Unknown:
V = ?
Solution:
We have been given that;
V = L x W x H
So;
V = 12cm x 6cm x 6cm = 432cm³
What characteristic of an element’s atoms always determines the element’s identity?
Answer:
Number of protons
Explanation:
There are three sub atomic particles. These are;
- Protons
- Electrons
- Neutrons
Among these three particles, only one determines the identity of the element. This is the Protons. The number of protons which is also called the atomic number determines the identity of an element. For instance, atom with one proton is Hydrogen and n other element can have atomic number of one.
Plz answer as soon as possible :)
Answer:
5.99
Explanation:
hope this helps you
potassium(k)=1s22s22p63s23p64s
Answer:
That is correct.
Explanation:
7. A sound wave travels 500m in 60 seconds. Calculate the speed of the sound?
Answer:
8.33m/s
Explanation:
Given parameters:
Distance traveled = 500m
Time taken = 60s
Unknown:
Speed of the sound = ?
Solution:
The speed the sound can be derived using the expression below:
Speed = [tex]\frac{distance}{time}[/tex]
So;
Speed = [tex]\frac{500}{60}[/tex] = 8.33m/s
HURRRYYY
in a chemical reaction you will always have an excess reactant. true or false?
Answer:
It's False
Explanation:
In a chemical reaction, reactants that are not used up when the reaction is finished are called excess reagents. The reagent that is completely used up or reacted is called the limiting reagent, because its quantity limits the amount of products formed.
Hope this helps you
Answer: false
Explanation:
1. A dry, empty bottle is placed in an ice bath. After the air inside the bottle is cooled off, a balloon is placed
over the opening. The bottle with the balloon is then placed in very hot water and the balloon inflated. Why
did the balloon inflate?
Answer:
hot air rises and expanded the balloon
Explanation:
thats it.
Are two atoms of the same element identical?
Answer:Two atoms of the same chemical element are typically not identical. First of all, there is a range of possible states that the electrons of an atom can occupy. Two atoms of the same element can be different if their electrons are in different states.
Explanation:This is not mine write it in your own words.
Describe two differences between transition elements and alkali metals?
Explanation:
On the periodic table, we can find a wide range of elements from alkali metals, to the alkali earth metals, transition metals and through to the noble gases.
The alkali metals are found on the first group in the periodic table and they are group of metals. Also, the transition elements are also a group of metals.
Transition elements are known to have variable oxidation states whereas, alkali metals have an oxidation state of +1. Transition metals belong the d-block on the periodic table whereas alkali metals are found in the first group on the periodic table.During a chemical reaction, the______
is not fully consumed.
A)
ideal chemical
B)
excess reactant
C)
limiting reagent
D)
stoichiometric compound
Answer:
limiting reagent :)
Explanation:
Answer:
B) excess reactant
Explanation:
During a chemical reaction, the excess reactant is not fully consumed.
what is selection in science?
Answer:
Selection, in biology, the preferential survival and reproduction or preferential elimination of individuals with certain genotypes (genetic compositions), by means of natural or artificial controlling factors.
Explanation:
Hope it helps you
What is a speed of 55 mph equivalent to in units of m/s? (1 mile = 1609 m, 1 hour = 3600 s)
Answer:
24.58 m/s
Explanation:
Given that,
Speed of an object = 55 mph
We need to find the equivalent unit in m/s
We know that,
1 mile = 1609 m
1 hour = 3600 s
So,
[tex]55\ mph=\dfrac{55\times 1609\ m}{3600\ s}\\\\=24.58\ m/s[/tex]
So, the required speed is 24.58 m/s.
What does microbiome do to your cells?
What information does a life-cycle diagram of a product contain?
a) Only information about the materials used to make the product
b)Information about the entire process of making a product from start to finish
c) Only information about the recycling process used for that material
d) Only information about how the product is made in a factory
Answer: c
Explanation: i think its right on edge
Summarize the arguments both for and against allowing genetically altered meats into the United States.
Can u please help!?
:⊃
Answer:Through "gene escape" they can pass on to other members of the same species and perhaps other species. Genes introduced in GMOs are no exception, and interactions might occur at gene, cell, plant and ecosystem level. Problems could result if, for example, herbicide-resistance genes got into weeds. So far, research on this is inconclusive, with scientists divided - often bitterly. But there is scientific consensus that once widely released, recalling transgenes or foreign DNA sequences, whose safety is still subject to scientific debate, will not be feasible.
Explanation: i don't really know, don't come at me please
What is the name of the ionic compound with the formula:
AlF3
Answer:
potassium chloride.
Which of the following properties are most typical for nonmetals? Check all that apply.
Answer:
B) Poor conductors
Explanation:
According to the characteristics of non-metals , non-metals are poor conductors of electricity and are mostly gases at room temperature and are also brittle.
What are the characteristics of non-metals?
An element is the simplest form of matter.Elements are further classified as metal,non -metals and metalloids. Non-metals do not possess luster and are dull . They are not malleable and ductile and are soft due to the covalent bonding present in them . Non-metals owing to their soft nature have low melting points.
As they have large intermolecular spaces they are mostly gases at room temperature and are also brittle due to the presence of weak bonding present in them.They are poor conductors as they do not have mobile electrons.They have low tensile strength due to presence of covalent bonding.
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Water has a molar mass of 18.0 g/mol. How many particles of water do you drink if you drink 64 oz., or 1893 grams, of water in a day?
Answer:
[tex] \frac{1839}{18} = 102.16[/tex]
Take 102.16 and multiply by avogadros #
and you get 6.33 × 10^25 otherwise A
Answer:
Answer is A
Explanation:
I just took this.
Balanced equation for
GaF3 +
Cs →
CSF +
Ga
(C) A metal 'M' has electronic configuration 2, 8, 2. Find the formula of its
12]
a. Hydroxide
b. Phosphate
M = 2 . 8 . 2
Valence Electron of M = 2
M ==> M⁺² + 2 e⁻
a. M⁺² + OH⁻ ==> M(OH)₂
b. M⁺² + PO₄⁻³ ==> M₃(PO₄)₂
Which has more mass: a stick of 4 counting cubes or a pile of 4 counting cubes?
i have thids quuuuesstttttttiopn
Scientists have observed that when oceanic plates and continental plates collide, the oceanic plate is driven under (slides below) the continental plate. The MOST LIKELY reason for this happening is
Answer:
thi s is 4 ano
Explanation:
sjfdbbjjbfogfg
Answer:
the continental plate is bigger than the oceanic plate.
Explanation:
_____ is the element from which iron is taken.
Carbon
Quartz
Hematite
Breathe.
You are going to be okay.
Breathe and remember that you've been in this place before. You've been this anxious and scared... and YOU'VE SURVIVED.
Breathe and know that you can survive this too. These feeling can't break you.
They're painful and debilitating, but you can sit with them and eventually... they WILL pass.
Maybe not immediately, but sometimes soon, they are going to fade, and when they do, you'll look back at this moment and laugh for having doubted your resilience. I know it feels unbearable right now, but keep breathing, again and again. THIS WILL PASS.
Answer:
thank you so much i really needed that
Explanation:
A student investigated the reaction of magnesium with oxygen.
The student calculated that 4.8 g of magnesium would make 8.0 g of magnesium oxide.
The equation for the reaction is:
2Mg + O2 → 2MgO
What mass of oxygen is required to produce 8.0 g of magnesium oxide from 4.8 g of magnesium?
Based on The Law of Conservation of Mass Lavoisier, the mass of oxygen required is 3,2 g
The two main postulates that was given by Antoine Lavoisier are, oxygen play an important role in combustion and the other is mass of the reactant and product is conserved. Therefore the mass of oxygen is 3.2 g.
What is law of conservation of mass?According to Law of conservation of mass, mass can neither be created nor be destroyed. Mass can only be transformed from one form to another. The law of conservation of mass was given by Antoine Lavoisier.
Every reaction in nature follow the law given by Antoine Lavoisier that is mass is always conserved. Another postulated that was given by Antoine Lavoisier is the role of oxygen in combustion reaction. Combustion can not happen without presence of oxygen. According to Law of Conservation of Mass Lavoisier, the mass of oxygen required is 3.2 g.
Therefore the mass of oxygen is 3.2 g.
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y’all pleasee answer these
What mass of aluminum is needed to produce 0.500 mole of aluminum chloride?
Answer: " 13.5 g Al " ;
→ that is: "13.5 grams of aluminum."
____________________________
Explanation:
____________________________
Note: What is missing from the question is the "balanced chemical equation" for the "chemical reaction" that contains:
The reactants: "aluminum (Al) " ; and "chlorine (Cl) " ; and:
The product: "aluminum choloride (AlCl₃) " .
____________________________
The "balanced chemical equation" is:
____________________________
2 Al + 3 Cl₂ → 2 AlCl₃ ;
_____________________________
Note: The molecular weight of "aluminum (Al)" is: " 26.98 g /mol " .
____________________________
So: We call solve using a technique known as: "dimensional analysis" :
____________________________
0.500 mol AlCl₃ * [tex](\frac{2mol Al}{2mol AlCl_{3} }) * (\frac{26.98g Al}{1 mol Al}) = ?[/tex]
____________________________
Note: The units of "mol AlCl₃" cancel out to "1' ; and:
The units of "mol Al" cancel out to "1" ; and we are left with:
____________________________
" [tex]\frac{(0.500 * 2 * 26.98)}{2}[/tex] g Al ["grams of aluminum"] ;
____________________________
Note: We can "cancel out the "2's" ; since "2/2 = 1 " ; and we have:
→ (0.500 * 26.98) g Al ;
= 13.49 g Al ;
→ Round to 3 (Three) significant figures;
→ Since: "0.500" has 3 (Three) significant figures:
____________________________
= 13.5 g Al ; that is: "13.5 grams of aluminum."
____________________________
Hope this is helpful!
Best wishes to you in your academic pursuits—and within the "Brainly" community!
____________________________
What is 2+2 plzzzzz help I’m only 83
Answer: 4
Explanation: if you move to spaces in a number line from 2 you would be at 4
what is the magnitude of earthquake took place in manila?
A.5.2
B.5.3
C.5.4
D.5.5
Answer:
i believe its 5.2
Explanation: