Answer:
(m1+m2)v
Explanation:
where m1 is the mass of the first body
m2 is the mass of the second body
v is the velocity
is the following true or false every element in the periodic table follows the aufbau principle
Answer:
True
Explanation:
It is true that every element in the periodic table follows the Aufbau's principle.
The principle states that "the sublevels with lower energies are filled up before those with higher energies".
Sublevels do not fill up in numerical order. This is true when writing the electronic configuration of all atoms on the periodic table.Answer:False
Explanation:
plzzz!!! Write the equation for rusting urgently needed
Answer:
[tex]Fe_{2} O_{3}[/tex]
Explanation:
Describe fusion and explain how fusion and fission are similar and how they are different.
Answer: Fusion and fission are similar in that they both release large amounts of energy. Nuclear fusion is a process in which two nuclei join to form a larger nucleus. Nuclear fission is a process in which a nucleus splits into two smaller nuclei.
Explanation:
What solid materials were dissolved in water?
Explanation:
salt, sugar and coffee :)
I have a quick question how do I balance these chemical equations
VbO + E2O → Vb(OE)2
YG + T3N → TG + Y3N
Tu + JgMO3 → Tu(MO3)2 + Jg
XfRf2 + Re2 → XfRf3
(02.02 MC)
During the hot summer days, there is a lot more water in the air. This is due to which change of state?
what do plants need to live?
put a mark next to the ones that plants need to live
sunlight
soil
water
plant food from a garden store
sugar
carbon dioxide
minerals
fertilizer
leaves
oxygen
chlorophyll
vitamins
i'll mark brainliest for whoever has the right answer or who ever answers it!
Answer:
Explanation:
sunlight
soil
water
sugar
carbon dioxide
minerals
leaves
vitamins
A car drivers 120miles in 3 hours.what is average speed of the car??
Answer:
40 mph
Explanation:
Speed = Distance/Time
Take the total distance driven by the car and divide it by the total amount of hours driven.
120/3 = 40
When does a phyisical change occur?
what is the ionic compound for sodium oxide
Answer:
Na2O
Sodium Oxide (Na2O)
Explanation:
Sodium oxide (Na2O) is an ionic compound. Its constituent atoms are, respectively, a metal and a non-metal. ... Sodium (Na), as a metal, will attempt to lose electrons to reach an octet state.
The resulting ionic compound, Na₂O, consists of positively charged sodium ions (Na⁺) and negatively charged oxide ions (O²⁻).
The ionic compound for sodium oxide is "sodium oxide" itself. In the ionic compound's formula, the metal (sodium) comes first, followed by the non-metal (oxygen). Sodium is an alkali metal with a charge of +1, and oxygen is a non-metal with a charge of -2.
The chemical formula for sodium oxide is Na₂O.
In this ionic compound:
Sodium (Na) loses two electrons to become Na⁺ (cation).
Oxygen (O) gains two electrons to become O²⁻ (anion).
The resulting ionic compound, Na₂O, consists of positively charged sodium ions (Na⁺) and negatively charged oxide ions (O²⁻).
Learn more about ionic compound from the link given below.
https://brainly.com/question/30420333
#SPJ6
Which will dissolve at the fastest rate?
a. 15 g of sugar cubes at 20° C
b. 15 g of sugar cubes at 60° C
c. 15 g of granulated sugar at 20° C
d. 15 g of granulated sugar at 60° C
What happens in a double-replacement reaction?
A. An element replaces an element in another compound.
B. Two reactants combine to form one compound.
C. One compound separates into two or more products.
O D. The elements in two compounds switch places
Answer: D
Explanation: trust
Answer:
Explanation:
D
Which of the following is a solid fuel (multicorrect)
(a)Petrol
(b)Diesel
(c) Wax
(d)Coal
Answer:
the answer is coal
Explanation:
When wood is burned, new substance are produced. Describe this reaction, and explain
what type of changes occurs. Use the terms flammability, chemical property, and physical
change or chemical change.
Answer:
hahahaha
Explanation:
hahahahahhahahaha soooo funny
Find the Oxidation Number for both Ca and F.
EXPLAIN PLEASE
Answer:
F= -1 (group 7A)
Ca= +2 (group 2)
Explanation:
oxidation #= # electrons atom gains/loses to form chemical bond
>assigned to atoms in oxidation-reduction rxn to indicate ability to donate/ gain e-
> positive oxidation #= loss of e-, negative= gain of e-
rules:
all group 2 elements (ca) have an oxidation state of 2+
group 7A (F)= -1 charge (needs to gain 1 e- to complete octet)
__________ is a result of a chemical reaction between pollutants and water and is one cause of chemical weathering of rock.
A.) carbon dioxide
B.) acid rain
C.) oxidation
D.) ice crystals
Answer:ice crystals
Explanation:
Calculate the wavelength of microwaves that have a frequency of 5.67 x 10¹¹ Hz. Please give your answer in scientific notation to the hundredths place. (Don't forget unit!) *
ook at the graph above showing the composition of air. Which component is the solvent?
A.
nitrogen
B.
other gases
C.
None of them are solvents.
D.
oxygen
Answer:
Nitrogen
Explanation:
Study Island
An atom gains electrons to become negatively charged
А
anion
B
cation
с
ionic bond
D
covalent bond
E
metallic bond
Answer:
A) an anion is an ion with a negative charge
B) a cation is an ion with a positive charge
The rest are bonds and do not pertain to the question
If a sample of gas occupies a volume of 6.80 L at 325°C, what will its volume be at
25.0°C if the pressure does not change?
Answer:
3.4L
Explanation:
Given parameters:
Initial Volume of gas = 6.8L
Initial temperature of gas = 325°C = 325 + 273 = 598K
Final temperature = 25°C = 25 + 273 = 298K
Unknown:
Final volume = ?
Solution:
To solve this problem, we apply the Charles's law. It can be expressed as;
[tex]\frac{V1}{T1}[/tex] = [tex]\frac{V2}{T2}[/tex]
V and T are volume and temperature
1 and 2 are initial and final states
Now insert the parameters and solve;
[tex]\frac{6.8}{598}[/tex] = [tex]\frac{V2}{298}[/tex]
2026.4 = 598V2
V2 = 3.4L
There are _____ Chemical families in the periodic table.
Explanation:
18
In chemistry, a group (also known as a family) is a column of elements in the periodic table of the chemical elements. There are 18 numbered groups in the periodic table; the f-block columns (between groups 3 and 4) are not numbered.
Choose the chemical equation that is correctly balanced.
Answer:
their is nothing their btw just letting you know
The energy on the earth
Answer:
The earth-atmosphere energy balance is the balance between incoming energy from the Sun and outgoing energy from the Earth. When it reaches the Earth, some is reflected back to space by clouds, some are absorbed by the atmosphere, and some is absorbed in the Earth's surface. ...
Explanation:
HELP ME pls it’s in the picture below
Answer:
Hydrated chromium(III) phosphate or chromium(III) phosphate tetrahydrate.
Answer:
the IUPAC name is chromium(III) phosphate pentahydrate.
In sexual reproduction, how many genes does an offspring receive for each trait ♀️
Answer:
Each parent's half of the genes acquired by the offspring. They have two of each chromosome and hence two alleles of each gene, and one acquired from each parent.
Label the liquids from least to most dense, Vegetable oil, water, Dish soap, Corn syrup, Honey
Answer:
1. Vegetable oil
2. Water
3. Dish soap
4. Corn syrup
5. Honey
Three reasons why friction is needed
Answer:
1:Without friction, we would not be able to stop walking since we would just keep slipping like on ice.
2:Without friction, objects would just slip and fall with a simple blow of air
3:And finally, without friction, we wouldn't be able to use machinery like cars and etc since they would just fly off
Explanation:
Friction can be a useful force because it prevents our shoes from slipping on the pavement when we walk and stops car tires skidding on the road. When you walk, friction is caused between the tread on shoes and the ground. This friction acts to grip the ground and prevent sliding. Sometimes we want to reduce friction.
20 ML of a gas at 200 K is heated until the new volume is 55ML what is the final temperature of the gas
Answer:
T2 = 550K
Explanation:
From Charles law;
V1/T1 = V2/T2
Where;
V1 is initial volume
V2 is final volume
T1 is initial temperature
T2 is final temperature
We are given;
V1 = 20 mL
V2 = 55 mL
T1 = 200 K
Thus from V1/T1 = V2/T2, making T2 the subject;
T2 = (V2 × T1)/V1
T2 = (55 × 200)/20
T2 = 550K
where do you find the reactants in a chemical equation
The hydra is an organism that reproduces by growing another organism from the sie of its tubular body. What type of asexual reproduction is this?
Answer:
Explanation:
budding
Figure 13.3 (a) Hydra reproduce asexually through budding: a bud forms on the tubular body of an adult hydra, develops a mouth and tentacles, and then detaches from its parent. The new hydra is fully developed and will find its own location for attachment.
