Answer:
The ratio of the mass of a substance to its volume is called...density.
What is thisssssssssss
Answer:
2Explanation:
As,
Mg + 2HCl ----> MgCl2 + H2
Which makes the equation balanced.
Can somebody please help me!!
Answer:
position
Explanation:
The position of an object is its location in a space.
Need ASAP please help :)
how is the temporory hardness of water remove bye boiling mathod
Answer:
The temporary hardness of water can be removed by boiling. The bicarbonates get converted to insoluble carbonates and settle down at the bottom.
Calcium bicarbonate -------> Calcium carbonate [insoluble] + Water + Carbon dioxide.
Ca[HCO3]2 -----> Ca CO3 + H2O + CO2
What kind of chemical reaction occurs in a hand-warming product that is worn inside gloves? Explain your answer.
Answer:
exothermic
Explanation:
Disposable hand warmers turn up the heat in your mittens by means of an exothermic reaction that, in essence, just creates rust.
Carbon dioxide is released into the atmosphere by _____.
1. denitrification
2. photosynthesis
3. fixation
4. respiration
Answer:
4 a minor but very important component of the atmosphere corban dioxide is released through natural processes such as reputation.;
Explanation:
a minor but very important component of the atmosphere corban dioxide is released through natural processes such as reputation
When an organism eats a plants,the energy and nutrients stored in the consumed organism flows up to the____level
Answer:
Energy is transferred between trophic levels when one organism eats another and gets the energy-rich molecules from its prey's body.
Explanation:
The flow of energy in an ecosystem is always linear ie uni direction. At each energy step in food chain, the energy received by the organisms is used for its own metabolism and maintenance. The left over energy is passed to next higher trophic level. Thus the energy flow decreases with successive trophic level.
Endocrine glands release chemicals that are also known as ___. a. target cells. b. hypothalamus. c. lymph. d. hormones. Please select the best answer from the choices provided A B C D
Answer:
Endocrine glands release chemicals that are also known as hormones.
Explanation:
Hope this helped!!!
Answer:
D. Hormones
Explanation:
The Endocrine system deals with all things hormones such as growth development and anything else dealing with puberty
with recessions government spending should
decrease
increase
or allowed to remain the same increased
Answer:
Increase to pay unemployment and get the economy back up
different between intermolecular and intra molecular dehydration
PLZZZ HELP CHEMISTRY QUESTION DOWN BELOW IMAGE SHOWWN BELOW
Answer:
Id say the third one
Explanation: chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time, so that there is no observable change in the properties of the system.
thats the only one that is close to definition
An example of a property that could change only if a chemical
change occurs is
a
size.
b shape.
C volume.
d flammability.
Answer:
d flammabilty
Explanation:
flammability is a property of a chemical change
How many grams are in 5 moles of calcium fluoride (CaF2)?
Answer:
1 moles Calcium Fluoride = 78.0748064 gram using the molecular weight calculator and the molar mass of CaF2.
What is biocapacity?
Answer: Biocapacity is the ecosystems' capacity to produce biological materials used by people and to absorb waste material generated by humans, under current management schemes and extraction technologies.Biocapacity is usually expressed in global hectares.
Explanation:
c. Write P on the line if the given object possesses potential energy and Krit
possesses kinetic energy.
1. Bouncing ball
2. Swinging chimes
3. Toys on the floor
4. Drinking glass on a table
5. Rotating blades of an electric fan
6. Moving car
7. Skater standing still
8. A running athlete
9. Planets orbits in its axis
10. lamp
Answer:
1 K
2 P
3 P
4 P
5 K
6 K
7 K
8 P
9P
10 K
For each of the following precipitation reactions, complete and balance the equation, indicating clearly which product is the precipitate.
a) Ba(NO3)2(aq) + (NH4)2SO4(aq) -->
b)CoCl3(aq) + NaOH(aq) -->
c)FeCl3(aq) + (NH4)2SS(aq) -->
Answer:
pagtoon og imo dots
Explanation:
pagtoon og imo dots
predict the product of the following reaction Ba + P
Can somebody help me please!!
Answer: velocity
Explanation: trust me man
Based on Gay-Lussac's law, which of the following statements is true for an ideal gas at constant volume and mole amount? (4 points)
a
Pressure is directly proportional to the absolute temperature.
b
Pressure is inversely proportional to the absolute temperature.
c
The number of collisions decreases with increase in pressure.
d
The number of collisions is independent of pressure.
Answer:
Yes Gay-Lucas was gay
Explanation:
How
many mols are in 151 g of dinitrogen monoxide?
Answer:
3.43 moles
Explanation:
To convert moles into grams you must take the number of grams and divide it by the atomic mass of the compound.
in this case, grams is 151 and N2O has an atomic mass of 44.013
so your equation would look like
151/44.013=3.430804535
your answer would be 3.43 moles
Question 33 of 45
The concentration of the hydronium ion in an aqueous solution at 25
°C is 0.0056 M. What is the concentration of the hydroxide ion?
Answer:
[OH-] = 1.8 x 10^-12 M
Explanation:
[H3O+][OH-] = Kw
Kw = 1.0 x 10^-14
[OH-] = 1.0 x 10^-14 / 0.0056 = 1.8 x 10^-12 M
what is the molecular formula of the molecule thay has an empirical formula of CH20and a molar mass of 240.2 g/mol?
C8H16O8
Explanation:
(CH2O)n=240.2
=12n+2n+16n=240.2
=30n=240.2
n=8
C8H16O8
Which ones are soluble in water and which ones are not soluble in water.
a. NH4CH3COO Ammonium acetate soluble
b. Ba(OH)2 Barium hydroxide soluble
c. FeCO3 Iron (II) Carbonate insoluble
d. NaOH Sodium hydroxide soluble
e. RbNO3 Rubidium nitrate soluble
Answer:
d. NaOH Sodium hydroxide soluble
What are primary observations in science?
Answer:
Observation is the active acquisition of information from a primary source. In living beings, observation employs the senses. In science, observation can also involve the recording of data via the use of scientific instruments. The term may also refer to any data collected during the scientific activity.
Explanation:
write the chemical equation of sodium reacts with hydrochloric acid
Answer:
NaOH + HCl → H2O and NaCl.
Explanation:
plzz mark as brainliest
Answer:
NaOH + HCl → H2O and NaCl.
Explanation:
I'm not sure 100%, but I think so...
It is possible to convert moles to particles by doing what
what changes would you see in the colour of litmus paper in lemon,ash and blood
Answer:
Colour of litmus papers in lemon:
Blue litmus- Red
Red litmus- No change
Really sorry but don't know about others
Litmus paper indicator shows following color changes for lemon it is, blue litmus to red, for ash and blood it is red litmus to blue indicating their acidic nature in case of lemon and alkaline nature in case of ash and blood.
What is an indicator?Indicator is defined as a chemical substance which is chemically a weak acid or a weak base which changes it's color depending upon the concentration of hydrogen ions present in the solution.They dissociate slightly in water to produce ions.
These are generally derived from plant pigments and are of slightly acidic or basic in nature.There are three types of indicators:
1) natural indicators
2) synthetic indicators
3) olfactory indicators.
These are mainly used in determination of end point of titrations. Every indicator has it's pH range in which it can perform effectively.These are usually organic compounds.
Learn more about indicators,here:
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Answer:
thanks
Explanation:
Why is NH3 not considered a base under the Arrhenius definition of acids and bases?
SELECT AN ANSWER
a. It does not react with acids.
b. NH3(aq) does not contain OH- ions.
c. NH3 is considered a base under the Arrhenius definition, but not under the Bronsted-Lowry definition.
d. It does not cause a color change when mixed with an acid-base (pH) indicator.
Answer:
b. NH3(aq) does not contain OH- ions.
Explanation:
According to Arrhenius in his definition, a base is a substance that has the ability to increase the hydroxyll ion (OH-) of an aqueous solution. In other words, Arrhenius bases dissociates into OH- when dissolved in water.
According to this question, ammonia (NH3) will not be considered an Arrhenius base because it does not contain OH-. This means that ammonia (NH3) cannot dissociate into hydroxyll ion when dissolved in water.
According to Boyle's law, what will happen to the volume of a gas if its pressure decreases and its temperature stays constant? A it's volume will change shape. B) its volume will increase C) it's volume will not be affected by the change in pressure D) it's volume will decrease