Answer:
Incase you have H and F and another H and F
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 :)
Someboyd please helppppppp!!!
Sodium: Na+
Iron (II): Fe2+
Iron (III): Fe3+
Titanium (IV): Ti4+
Vanadium (V): V5+
Ammonium: NH4+
I hope this helps! :)
How to tell if a reaction is exothermic.
Answer:
If the reaction loses heat it is exothermic.
does anyone know how to find the electron configuration of an element without using a periodic table?? group and period is already given
c. 0.0023 moles of CO2
Answer:
0.1gram
Explanation:
mass = no of moles × molar mass
When particles in a solid or liquid move faster they move slightly further apart, what is this called?
When particles in a solid or liquid move faster they move slightly further
apart and is referred to as Elastic collision
Liquids and gases possess more kinetic energy than solids which is why
there is movement of its atoms in a system. Gas have the highest kinetic
energy and solids have the lowest. When the atoms move ,they collide with
one another which pushes the particles further apart.
The atoms in liquid and gas exhibit vibrational(rotational) motion which brings about movement and collision of the particles.
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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.
diagram 1 above shows equimolar samples of two gases inside a container fitted with a removable barrier placed so that each gas occupies the same volume. the barrier is carefully removed as the temperature is held constant. diagram 2 above shows the gases soon after the barrier is removed. which statement describes the changes to the initial pressure of each gas and the final partial pressure of each gas in the mixture and also indicates the final total pressure?
This problem is describing the state two gases have when separated and together as shown on the attached picture. First of all, diagram 1 shows how they are separated in two containers with apparently equal volumes, whereas diagram 2 shows the removal of the barrier so that they get mixed together.
In this case, we can analyze that each gas has its own pressure and due to the removal of the barrier, both pressure and volume undergo a change. Thus, we can infer that the final volume is doubled with respected to the initial one for each gas, causing the pressure of each gas to be halved and the total pressure the half of the added ones, in agreement to the Boyle's law (inversely proportional relationship between pressure and temperature).
Therefore, the correct choice is:
C. The partial pressure of each gas in the mixture is half its initial pressure; the final total pressure is half the sum of the initial pressures of the two gases.
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https://brainly.com/question/21184611What 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
Assume that 3.00 grams of HgO was used in this reaction. To determine the number of moles of oxygen gas formed, you need to know the number of moles of HgO reactant was used. What quantity in moles of HgO were used
Taking into account the reaction stoichiometry and the definition of molar mass, the quantity of HgO used is 0.01385 moles and 0.006925 moles of O₂ are formed when 3.00 grams of HgO was used.
In first place, the balanced reaction is:
2 HgO → 2 Hg + O₂
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
HgO: 2 molesHg: 2 molesO₂: 1 moleThe molar mass of the compounds is:
HgO: 216.59 g/moleHg: 200.59 g/moleO₂: 32 g/mole
You know that 3.00 grams of HgO was used. Then, the quantity in moles of HgO used, can be calculated using the molar mass of HgO as follow:
[tex]3 gramsx\frac{1 mole}{216.59 grams}[/tex]= 0.01385 moles
Finally, the quantity of HgO used is 0.01385 moles.
To determine the number of moles of oxygen gas formed, the following rule of three can be applied: if by reaction stoichiometry 2 moles of HgO form 1 mole of O₂, 0.01385 moles of HgO form how many moles of O₂?
[tex]amount of moles of O_{2} =\frac{0.01385 moles of HgOx1 mole of O_{2} }{2 moles of HgO}[/tex]
amount of moles of O₂= 0.006925 moles
Then, 0.006925 moles of O₂ are formed when 3.00 grams of HgO was used.
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brainly.com/question/24741074 brainly.com/question/24653699 brainly.com/question/23871710what are remained on the cloth? explain your answer.
Answer:
on which cloth. since the sub is chemistry. which chemical or mixture or compound
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.
what 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:
help asap for brainlist
Answer:
Function A: +3
Function B: +2
y intercept is greater in Function B, the value is 16
Explanation:
When bacon is cooked, a solid fatty residue remains in the pan after cooling. What can be said about the fat in bacon based on this observation
Answer:
The fatty acids are mostly saturated.
Explanation:
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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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
Type the correct answer in each box to complete the table. Use numerals instead of words.
Determine the least common multiple of the charges for each combination of elements in the table. Ignore the plus (+) and minus (−) signs of the charges and just enter numerals. The first row is completed for you.
The least common multiple of the charges for each combination of elements in the table. Ignoring the plus (+) and minus (−) signs of the charges and just entering the numerals. The table is complete as follows.
chlorine(Cl) oxygen(O) nitrogen(N)
Lithium(Li) 1 2 3
magnesium(Mg) 2 1 3
aluminium(Al) 3 2 1
How charged species formed?The charged species formed by losing and gaining of an electrons from an atoms and which called ions.If an atoms lose one and more an electrons then positive charged species formed called cation. If an atoms gain one and more an electrons then positive charged species formed called an anion.To learn more about charged species here.
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#SPJ2
Answer: the first one is incorrect
Explanation:
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/14383794under the same conditions of temperature and pressure how does a liquid differ from a gas
If the energy of the reactants is less than
the energy of the products, what kind of reaction is it.
What is the mass of oxygen atoms in 0. 380 mol fe(co)5?.
Answer:39+30
Explanation:
is it difficult or easy to obtain hydro power
Answer:yes
Explanation:
cause yes
Name the elements that make the phone vibrate.
Answer:
someone calling you, notifications or apps
Explanation:
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:
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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how many moles of hydrogen are there in one mole of h2o?
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.
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:
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.