It is a negative ion that has one more valence electron than a neutral bromine atom. All atoms of the element potassium have 19 protons.
Answer:
I think It's C
Explanation:
I'm doing it on edge
SITUATION # 2: Every morning we drink milk to strengthen our bones. You
prepare a 100ml with a 5% powdered milk mix solution for your mother.
She asks you how many grams of milk you used for her drinks. What
would be your response to her question?
The amount of milk present on 5 % of 100 ml milk powder solution is 95 grams.
The solution was prepared by dissolving 5% milk powder in 100 ml of the solution.
The amount of milk powder will be = [tex]\rm 100\;\times\;\frac{5}{100}[/tex] ml
The amount of milk powder = 5 ml.
The amount of milk = Total - amount of milk powder
The amount of milk = 100 - 5
The amount of milk = 95 ml.
Since the density of milk = 1 gm/ml
The amount of milk in 95 ml of solution = 95 grams.
In the solution of 5 % milk powder in 100 ml milk, there would be 95 grams of milk.
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How are protons and neutrons the same and how are they different?
Explanation:
Protons, Neutrons and Electrons are the three primary subatomic particles that form an atom.
Protons and Neutrons are large particles and are densely compacted into the nucleus of the atom. Protons are electrochemically positive in charge and the Neutrons are electrochemically neutral in charge.
Together the protons and Neutrons make up the mass of the atom.
Electrons are electrochemically negatively charged particles that move random around the nucleus. They have a relatively small mass compared to Protons and Neutrons. They are found in electron clouds that surround the nucleus and their movement and properties provide for the bonding characteristics of each atom.
Which of the following is a true statement about heat transfer through conduction, convection, or radiation?
A. Heat NEVER travels in a similar pattern.
B. Heat ALWAYS flows from cooler objects to warmer objects.
C. Heat ALWAYS flows from warmer objects to cooler objects.
D. Heat is NOT related to temperature differences.
Answer:
It's (A)
Because: No, heat can only travel through solids by conduction.
Answer:
Heat ALWAYS flows from warmer objects to cooler objects.
Explanation:
Heat always transfers from warmer objects to cooler objects. For example, if you put a piece of ice in your drink, heat from your drink transfers into the ice, thus, cooling your drink and melting the ice.
What is used up in and stops a chemical reaction?
Answer:
The limiting reagent is the reactant that is used up completely. This stops the reaction and no further products are made. Given the balanced chemical equation that describes the reaction, there are several ways to identify the limiting reagent.
What is the overall charge of a Aluminum atom that loses 3 electrons
What is the correct electron configuration for Si (atomic number 14)?
A. 1s2 2s2 2p6 3s2 3p2
B. 1s2 2s2 2p6 3s2 3p3
C. 1s2 2s2 2p6 3s1 3p3
D. 1s2 2s2 2p6 3s2 2d3
Answer:
1s2 2s2 2p6 3s2 3p2
Explanation:
you're welcome
which sentence describes two atoms that form a covalent bond?
Answer:
its D
Explanation: just took the test got it right
Option : D
The difference in electronegativity of two atoms should be less than or equal to 1.7 to form a stable covalent bond.
What is covalent bond?A covalent bond is the mutual sharing of one or more pairs of electrons between two non -metal atoms.What is electronegativity?Electronegativity is the tendency of an atom or a functional group to attract electrons toward itself.How electronegativity is related to covalent bonding?Electronegativity affects the degree of sharing of electrons in covalent bonding.The higher the equivalent sharing the stronger the bond.Learn more about covalent bonding here...
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Which of the following is accurate
regarding intrusive igneous rock?
A. It forms on the earth's surface.
B. It forms inside the earth.
C. It is made from sediments.
D. It has a fine-grained texture.
Answer:
B
Explanation:
I believe because intrusive stays within the earth
The accurate statement regarding the intrusive igneous rock is that It forms inside the earth.Hence, Option (B) is correct.
What are Intrusive igneous rock ?Intrusive, or plutonic, igneous rock forms when magma remains inside the Earth's crust where it cools and solidifies in chambers within pre-existing rock.
The magma cools very slowly over many thousands or millions of years until is solidifies.
Therefore, The accurate statement regarding the intrusive igneous rock is that It forms inside the earth.Hence, Option (B) is correct.
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According to this chemical equation which molecules represeny the products 4fe+3O->2fe2O3 A iron B iron and oxygen C iron oxide D iron oxygen and iron oxygen
Answer: C. iron oxide
Explanation:
In a chemical reaction , the reactants are written on the left hand side followed by a rightarrow and then products are given on the right side of the arrow.
In the given chemical equation :
[tex]4Fe+3O_2\rightarrow 2Fe_2O_3[/tex]
Reactants are iron (Fe) and oxygen [tex](O_2)[/tex] and product is iron oxide [tex](Fe_2O_3)[/tex].
What happens to the anode in an electrochemical cell?
A. It gains electrons.
B. It loses mass.
C. It gains mass.
D. It becomes electroplated.
Answer:
I think it bbbbbbbbbbbbb
Answer:
B
Explanation:
Hope this helps!!!
Which statement best describes why radioactive atoms can be used to date materials?
A.
Nonradioactive atoms in rocks eventually turn into radioactive atoms.
B.
The Sun interacting with atoms in a rock causes new atoms to form over time.
C.
The ratio of radioactive atoms to other kinds of atoms changes over time.
D.
The number of radioactive atoms in a substance increases over many years.
The ratio of radioactive atoms to other kinds of atoms changes over time. Hence, option C is correct.
What is radioactive decay?In the process of radioactive decay the unstable atom nuclei of the parent nucleus break down and split so as to release the daughter atoms or nuclei along with the release of energy in the form of heat. Thus as the decay process proceeds the concentration of the parent atom decreases but the concentration of the daughter atom increases.
Radioactive atoms can be used to date materials because the radioactive decay occurs at a known rate, and the density of fission tracks for the amount of uranium within a mineral grain can be used to determine its age.
Hence, option C is correct.
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A sample of helium gas at a pressure of 0.538 atm and a temperature of 256 °C, occupies a volume of 437 mL. If the gas is cooled at constant pressure until its volume is 316 mL, the temperature of the gas sample will be
Answer:
110 °C
Explanation:
The following data were obtained from the question:
Initial pressure (P1) = 0.538 atm
Initial temperature (T1) = 256 °C
Initial volume (V1) = 437 mL.
Final pressure (P2) = constant = 0.538 atm
Final volume (V2) = 316 mL
Final temperature (T2) =?
Next we shall convert 256 °C to Kelvin temperature. This Can be obtained as follow:
T(K) = T(°C) + 273
Initial temperature (T1) = 256 °C
Initial temperature (T1) = 256 °C + 273 = 529 K
Next, we shall determine the new temperature of the gas as illustrated below:
Pressure = constant
Initial temperature (T1) = 529 K
Initial volume (V1) = 437 mL.
Final volume (V2) = 316 mL
Final temperature (T2) =?
Applying the Charles' law equation, we have:
V1 /T1 = V2 /T2
437/529 = 316/T2
Cross multiply
437 × T2 = 529 × 316
437 × T2 = 167164
Divide both side by 437
T2 = 167164 / 437
T2 = 382.5 ≈ 383 K
Finally, we shall convert 383 K to celsius temperature. This can be obtained as follow:
T(°C) = T(K) – 273
T(K) = 383 K
T(°C) = 383 – 273
T(°C) = 110 °C
Therefore, the new temperature of the gas is 110 °C
Is nitrogen and cobalt and carbon a mixture or pure substance
Chemicals that are able to slow or stop the reaction rate are inhibitors. reactants. products. catalysts.
Answer:inhibitors
Explanation:
I just took the quiz .
Answer:
answer is (A inhibitors)
Explanation:
Which of these structures is least in danger of chemical weathering?
a bridge made of iron rods
a pile of tiles made of feldspar
a bench made of composite plastic
a statue made of marble
A student was assigned to take water samples from a lake near his home. He measured the pH of one of the water samples to be 6.0. Which of the following best describes this sample of water?
O Highly acidic
Slightly acidic
O Highly basic
Slightly basic
Answer: I'm guess I ok? Also this is what I think and did put in mine.
Explanation: I think it's "B.- Slightly Acidic" sorry if too late
I need help it’s due in a couple minutes !
Answer:
chemical composition
I turn the Ritz into a poor house
It's like eviction number four now
Go 'head and ash it on the floor now
Girl go 'head and show me how you go down
And I feel my whole body peaking
And I'm F anybody with they legs wide
NAME THE SONG
help
When the sun impacts weather, an interaction with the __________ takes place.
atmosphere
biosphere
geosphere
hydrosphere
Which of these actions would decrease heat transfer between two objects?
increasing the temperature of the warmer object
increasing the area of their contact
reducing the thermal energy of the cooler object
reducing the time of their contact
increasing the area of contact
Answer:
D
Explanation:
Reducing the time of their contact
can someone help me please
First response
Answer:
102°C is equal to
375.15 kelvin
Formula:
102°C + 273.15 = 375.15K
Therefore! your answer would be the third option
Answer:
375.15
Explanation:
102°C+273.15=375.15K
Hope I helped!
is silver nitrate a gas or solid
Answer:
soild
Explanation:
Answer:solid
Explanation:
what did rutherford's gold foil experiment tell about the atom
Answer:
The alpha particles that were fired at the gold foil were positively charged. ... These experiments led Rutherford to describe the atom as containing mostly empty space, with a very small, dense, positively charged nucleus at the center, which contained most of the mass of the atom, with the electrons orbiting the nucleus.
how many grams are there in 2.3x10^24 atoms of silver
What are the units for measuring specific heat?
degrees Celsius per gram
joules per degrees Celsius
joules per gram degree Celsius
degrees Celsius per joule gram
Answer:
The SI unit of specific heat is joule per kelvin and kilogram, J/(K kg). For example, at a temperature of 25 °C (the specific heat capacity can vary with the temperature), the heat required to raise the temperature of 1 kg of water by 1 K (equivalent to 1 °C) is 4179
Explanation:
if this answer is correct make me as brainlelist
Answer:
C
Explanation:
bc
Which nonprescription drug is commonly abused by teens?
Ritalin
aspirin
OxyContin
cough syrup
Report the problem to the local authorities.
Answer:
D. Cough syrup.
Explanation: This is the correct answer on Edge 2021, just took the quiz. Hope this helps ^-^.
Cough syrup nonprescription drug is commonly abused by teens.
What is Cough syrup?There is a non-opioid cough suppressant in this product (such as chlophedianol, dextromethorphan). It works on the cough center in the brain to help you stop coughing.
Moreover, this medicine contains an antihistamine, such as triprolidine, chlorpheniramine, or doxylamine, which blocks the effects of a natural chemical called histamine, which is responsible for allergy symptoms.
Before taking this medicine for a persistent cough brought on by smoking or a cough with excessively thick mucus, consult your doctor. The safety or effectiveness of cough-and-cold remedies in children under the age of 6 has not been established.
Therefore, Cough syrup nonprescription drug is commonly abused by teens.
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What is the correct order of biological levels of organization, from the most complex (largest) to least complex (smallest)?
Answer:
The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere
Explanation:
.
The speed of someone running 5 miles in 45 minutes
Answer:
9 is the answer
Explanation:
because u need to divide 45 from 5 which is 9
Answer:
9
Explanation:
22 Directions: Select the correct food web. In Ottawalley National Park, grass is abundant. Gazelles spend most of the day feeding on grass, their main source of food. Gazelles are hunted and eaten by the park's wild dogs. Lions are a predator of both wild dogs and gazelles. Which of the following food webs best represents the relationships described above? lion lion wild dog - wild dog gazelle gazelle grass grass lion lion wild dog wild dog gazelle gazelle grass grass
Answer:
Explanation:
22 Directions: Select the correct food web. In Ottawalley National Park, grass is abundant. Gazelles spend most of the day feeding on grass, their main source of food. Gazelles are hunted and eaten by the park's wild dogs. Lions are a predator of both wild dogs and gazelles. Which of the following food webs best represents the relationships described above? lion lion wild dog - wild dog gazelle gazelle grass grass lion lion wild dog wild dog gazelle gazelle grass grass
Answer:
its the 4th one i just did it on study island
Explanation:
HELP!!!!!!! THIS NEEDS TO BE DONE BY TODAY!!!!
Answer:I think it is A or C
Explanation: