Answer:
Explained below
Explanation:
When cold weather is approaching, a lot of motorists usually experience a warning light that indicates low-pressure on the dash board or they simply notice that the tires now look a little less full than they should have prior to that time.
The primary reason for that low pressure indication is the drop in temperatures, which now causes the air to get denser and in return, consequently lower the tire pressure.
In essence the tires will lose air pressure because they contract in the cold season.
I don't know what to do about this now. I like her a lot; I don't want to just give up on this because I see relationship potential with this girl. And I feel she genuinely does enjoy the time she spends with me too.
Answer:
Awe ...
Explanation:
can someone please help with this ASAP :):):):):):):):):):):):):):)
Answer:
u just put T and t in all of the boxes
Explanation:
like this
T t
T t
and see how many times you get a dominant one which is 2 T T
i dont know if u understand I took this a long time ago i forgot my bad if it's hard to understand
1. 2g of calcium carbonate was added to 40 cm3 of hydrochloric acid of concentration 2 moldm-3.
Write a balanced equation for the reaction. (2 mrks)
The balanced equation :
CaCO₃ (s) + 2HCl (aq) → CaCl₂ (aq) + H₂O (l) + CO₂ (g)
Further explanationEqualization of chemical reaction equations can be done using variables. Steps in equalizing the reaction equation:
1. gives a coefficient on substances involved in the equation of reaction such as a, b, or c etc.
2. make an equation based on the similarity of the number of atoms where the number of atoms = coefficient × index between reactant and product
3. Select the coefficient of the substance with the most complex chemical formula equal to 1
CaCO₃ (s) + HCl (aq) → CaCl₂ (aq) + H₂O (l) + CO₂ (g)
Give coefficient :
CaCO₃ (s) + aHCl (aq) → bCaCl₂ (aq) + cH₂O (l) + dCO₂ (g)
Ca, left=1, right=b⇒b=1
C, left=1, right=d⇒d=1
O, left=3, right=c+2d⇒3=c+2d⇒3=c+2.1⇒c=1
H, left=a, right=2c⇒a=2c⇒a=2.1⇒a=2
the equation becomes :
CaCO₃ (s) + 2HCl (aq) → CaCl₂ (aq) + H₂O (l) + CO₂ (g)
what is the mass of 1.46 mole of zinc?
Answer:Zinc grams to moles
Molar mass of Zinc(Zn) = 65.38 g/mol. This means 1 mol of Zn is 65.38g . To find the number of moles of Zn, we divide the given amount of Zn by the molar mass of Zn. Hence, 1.34 g of Zn contains 0.020 moles of Zinc
Explanation:
1 mole is equal to 6.023 × 10 ²³ molecules. The mass of 1.46 mole of zinc is 1.34 grams.
What do you mean by mole ?The term mole is defined as the amount of substance of a system which contains as many elementary entities.
The mole concept can be used to convert between mass and number of particles.
One mole of any substance is equal to 6.023 × 10²³ units of that substance such as atoms, molecules, or ions. The number 6.023 × 10²³ is called as Avogadro's number or Avogadro's constant.
Molar mass of Zinc(Zn) = 65.38 g/mol.
This means 1 mol of Zn = 65.38g .
To calculate the number of moles of Zn, we divide the given amount of Zn by the molar mass of Zn.
Hence, 1.34 g of Zn contains 0.020 moles of Zinc.
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The solids and liquids with the strongest intermolecular forces of attraction will have the
lowest melting and boiling points.
a. TRUE
b. FALSE
8. At higher temperatures _______.
A. particles in an object have less energy
B. particles in an object move faster
C. a gas contracts
D. particles vibrate slowly
Answer:
B. particles in an object move faster
Explanation:
At higher temperatures, particles in an object moves faster.
Temperature is the degree of hotness or coldness of a body.
At higher temperature, the substance is very hot. Temperature is related to the heat energy content of a bodyAs the temperature increases, the average kinetic energy of the particles of system increases more and more. This is in compliance with the kinetic molecular theory of matter. Therefore, at higher temperatures, particles in an object move faster.I need someone who can help me
Answer:
what u need help with bro
Answer:
8 protons, 10 neutrons, 8 electrons
Explanation:
In carbon dioxide, London dispersion forces are the only intermolecular forces of
attraction.
a. TRUE
b. FALSE
Answer:
true
Explanation:
CO has two C-O bonds. The dipoles point in opposite directions, so they cancel each other out. Thus, although CO₂ has polar bonds, it is a nonpolar molecule. Therefore, the only intermolecular forces are London dispersion forces.
Due at 11:59
.................................
Answer:
1 Covalent BondExplanation:
__________________________________________________________
According to Answers,
There is one covalent bond in a chlorine molecule. The formula for a chlorine molecule is Cl2, which means that there are two chlorine atoms bonded together per molecule. The structural formula for a molecule of chlorine is Cl-Cl, in which the line in between the symbols for the two atoms represents a single covalent bond.
__________________________________________________________
Hope this helps! <3
__________________________________________________________
please help me and you get Brainliest is anyone go to answer my question
Answer: mitosis results in two. meiosis results in four.
Explanation:
Cells divide and reproduce in two ways, mitosis and meiosis. Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells
Which of Earth's Spheres take up most of the Earth's surface?
Hydrosphere
atmosphere
cryosphere
geosphere
Bi2(C2O4)5 compound name
Answer:
Bismuth oxalate
Explanation:
What is the lewis structure for silicon tetrachloride, SiCl4?
Answer:
two dots around each side.
Explanation:
what is the bond angle of BBr3
An atom has 15 electrons. How many are on each shell? *
0 2,8,7
0 2,8,5
8,7
15
Answer:
So... for the element of PHOSPHORUS, you already know that the atomic number tells you the number of electrons. That means there are 15 electrons in a Phosphorus atom. Looking at the picture, you can see there are two electrons in shell one, eight in shell two, and five in shell three.
What effects do winds patterns have on climate
Prevailing winds bring air from one type of climate to another. For example, warm winds that travel over water tend to collect moisture as they travel; the water vapor in the air will condense as it moves into colder climates, which is why temperate coastal areas often receive heavy rainfall.
Hope it Helps! T^T
Both the stomach and the small intestine are involved in the digestion of food.
The churning of food by stomach muscles and peptidase enzymes in the small
intestine both break food molecules into smaller molecules.
Which statement best describes changes to food during digestion?
Answer: I think the answer is The muscle contractions result in physical changes, while the action of the peptidase results in chemical changes.
Explanation: Because the muscles would make the food smaller and the enzymes have a chemical change to it because it changes the molecules in the food.
The chemical processes in food digestion results in the formation of new
substances.
The statement that best describes the changes in food during digestion is;
The churning of the food is a physical process, which results in physical changes while the peptidase results in chemical changes of the food.
Reasons:
The given processes in the digestion of food are;
Stomach: Food churning is the process by which the small intestine vigorously turns ingested food.
Small intestine: The action of the peptidase enzyme is to increase the rate of the digestion of food.
Therefore;
The churning of the food is a physical process, which results in physical changes while the peptidase results in chemical changes of the food.
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The possible question options obtained from a similar question online are;
The churning of the food and peptidase action both results in chemical changes.The churning of the brings about a chemical change, while the peptidase results in a physical change.The churning action brings about physical change, while the peptidase brings about chemical change.Both the churning action and the action of the peptidase result in chemical change.balancing skeleton equation can someone help me with this
When any chemical equation is not balanced then that is known as skeletal chemical equation. We need to balance it because as we know that mass can neither be created nor be distroyed and also the number of atoms on the reactant side should always be equal to the compounds on the product side .
Please help! Will mark brainliest!
I’m doing exams please hurry!
The diagram below shows four altitude locations on a mountain.
Which of these locations is most likely to experience the least amount of snow?
Location D
Location C
Location A
Location B
According to the diagram shown, location A will receive least amount of snow in the form of precipitation.
What is precipitation?
Precipitation is defined as any liquid or frozen water which forms in the atmosphere and then gets received on Earth.It is one of the most important steps of the water cycle.
Precipitation takes place in form of clouds when water vapor gets accumulated in clouds and they get bigger and heavy, when the clouds become heavy enough they fall to the land in the form of rain.If a cloud is present at higher altitudes , the water present in the clouds freezes and fall to the ground in form of snow,hail.
Precipitation occurs always in case of fresh water because the sea salt does not evaporate with the water.The different types of precipitation are rain, drizzle,snow,snow hail,etc.
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6. Which of the following molecules has a central atom with precisely two unshared
pairs of electrons?
methane, CH4
ammonia, NH3
hydrocyanic acid, HCN
water, H20
CLEAR ALL
Answer:
water, H20
Explanation:
From the given choices, only water has two unshared or lone pairs of electrons in its central atom.
The formula of water is:
H₂O
H is hydrogen with 1 electron
O is oxygen with 8 electrons and 6 valence electrons
To form the covalent bond, the 6 valence electrons are involved. Two out of the 6 bonds with the two oxygen.
The remaining 4 gives the two lone pairs.
Maria walked on a beach made mostly of sand. She walked barefoot
on the beach early in the morning, and the sand was cool. When she
walked in the same area in the afternoon, the sand was hot.
Which statement best describes why the temperature of the sand
increased?
The statement that the atoms in the sand were moving more quickly best describes why the temperature of the sand is increased. The relationship between kinetic energy and temperature is explained here.
What is the relationship between kinetic energy and temperature?The temperature of a body is directly proportional to the kinetic energy. The energy acquired by those molecules which are in motion is called the kinetic energy.
The radiation of the sun falls on a number of objects on our surroundings. The objects absorb this energy till afternoon due to which they become hot.
When Maria walked in afternoon, the sand was hot as its particles have gained the kinetic energy due to which they move rapidly from one place to another. So that the sand feels more hot in the afternoon.
Thus the atoms in the sand were moving more quickly best describes the increase in temperature of the sand.
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Which organelle captures sunlight and helps in food synthesis?
Answer:
Chloroplasts! :)
Explanation:
Hope this helps
how can you best classify this molecule
A) Carboxylic
B) Alcohol
C) Ester
D) Amine
Answer:
B) Alcohol
Explanation:
It is methanol. Alcohol has group 'OH'
What is the random mixing of gas molecules called?
O A. Volume
O B. Temperature
C. Diffusion
O D. Pressure
Answer:
C. Diffusion
it is called diffusion
The statue of Liberty is made out of copper metal. When it was first constructed, the color of the copper metal was bright burnt orange.
Over time, however, it slowly developed a green color as it was exposed to air. What happened to the statue of liberty?
Explanation:
The green color of the Statue of Liberty was due to the outer surface covered with hundreds of thin copper sheets. Copper reacts with the air to form a patina or verdigis
Name the three types of adaptations
Answer:
behavioral, physiological, structural
Explanation:
hi Hope's this helps lapras
which of the below would result in rearrangement of atoms at molecular level
a) salt dissolved in water
b) broken tree branches
c) gasoline combusts in an engine
d) steam rising from hot pavement
The best answer is
A) The atoms in the mineral get rearranged
Explanation:
A class investigated the reactivity of four metals by dropping little pieces of the
metals into solutions of their salts.
When there was a reaction they recorded a `Y’, when there was no reaction they
recorded an `N’.
Here is their table of results.From their results, which is the least reactive metal?
The least reactive metal is lead, since it reacted with none of the salt solutions.
If 150 g of sucrose dissolved in a 1.50 L water what is the molarity of a solution
Answer:
0.2923 molar
Explanation:
M = given mass /(molar mass× volume)
150/342(1.5)
150/513
0.2923M
May someone pls help me with this!
Answer:
Explanation:
1. Chemistry
2. Atoms
3. Anode
4. Cathode