Answer:
6.48 M
Explanation:
M₁V₁ = M₂V₂
Step 1: Define
Molarity₁ = 2.70 M
Volume₁ = 1.20 L
Molarity₂ = unknown
Volume₂ = 0.500 L
Step 2: Substitute and Evaluate for M₂
(2.70 M)(1.20 L) = (M₂)(0.500 L)
3.24 = (M₂)(0.500 L)
M₂ = 6.48 M
help me out please this is hard
[(Cl3Sn)2RhCl2Rh(SnCl3)2]⁴- name
#proudtobeanndian
.......
Elastic energy is a form of kinetic energy.
True or False help
an object has a mass of 4 grams and a volume of 2 cm3 what is the density of the object
Answer:
D = 2 g/cm³
Explanation:
Density = mass over volume
D = m/v
Step 1: Define
m = 4 grams
v = 2 cm³
Step 2: Substitute and Evaluate
D = 4 g/2 cm³
D = 2 g/cm³
All of the following are true of body systems within an animal, EXCEPT-
each system within the body is made up of multiple parts.
body systems interact with other body systems at a given time.
each part of a system only has functions for that system.
systems can respond to the needs of the animal.
Answer:
Each part of a system only has functions for that system.
Explanation:
since the second answer is right, then that automatically eliminates the third one. each part of a system can function for other systems too. such as the brain which controls all systems.
What is the electric charge of a Proton?
What type of attachment is displayed when a child actively explores the environment but seeks out the caregiver for reassurance or comfort?
I didnt see an answer for this so I thought Id answer it myself. The answer is C secure. (Edge 2020) Hope this helps!
Answer:
C - Secure
Explanation:
Edg 2020
Anxious-Ambivalent attachment is displayed when a child actively explores the environment but seeks out the caregiver for comfort or reassurance.
• The form of attachment when children seem to distrust caregivers, and this insecurity usually signifies that their surroundings is explored with trepidation rather than excitement is known as Anxious-Ambivalent attachment.
• In this form of attachment, children continuously look for approval from their caregivers and spontaneously observe their environments for fear of being abandoned.
• The children developing under this form of attachment style, seem to carry what they have acquired into adulthood, and usually feel unloved by their partners.
Thus, the given case is of Anxious-Ambivalent attachment.
To know more about:
https://brainly.com/question/25577203
If a 5.00% citric acid solution contains 5.00 grams of citric acid in every 100.0 mL of the solution, how many grams of citric acid are present in 375 mL of the 5.00% (w/v) solution? show your work using dimensional analysis and report your answer with the correct number of significant figures
Answer:
18.8 g Citric acid
Explanation:
We have a 5.00% (w/v) citric acid solution, that is, there are 5.00 grams of citric acid every 100.0 mL of the solution. We can use dimensional analysis to calculate the grams of citric acid in 375 mL of the 5.00% (w/v) solution.
375 mL Solution × (5.00 g Citric acid/100.0 mL Solution) = 18.8 g Citric acid
Which one of these describes the arrangement of particles in a metal?
A. Layers of metal ions surrounded by delocalised electrons
B.Closely packed electrons with delocalised ions
C.Alternating layers of metal ions and electron
D. None of the above
Answer:
C. Alternating layers of metal ions and electron
“NH4VO3” is a...
Symbol
Name
Chemical formula
Answer:
its a chemical formula, it has numbers and symbols
How many CO2 molecules in 0.0189 mol of CO2?
.11 x 1022 molecules
.624 x 1023 molecules
1.14 x 1022 molecules
Answer:
option C is correct = 1.14 × 10²² molecules of CO₂
Explanation:
Given data:
Number of moles of CO₂ = 0.0189 mol
Number of molecules = ?
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
For example,
18 g of water = 1 mole = 6.022 × 10²³ molecules of water
For given question:
1 mole of CO₂ = 6.022 × 10²³ molecules of CO₂
0.0189 mol of CO₂ × 6.022 × 10²³ molecules of CO₂ / 1mol
1.14 × 10²² molecules of CO₂
Thus, option C is correct.
Substituents on an aromatic ring can have several effects on electrophilic aromatic substitution reactions. Substituents can activate or deactivate the ring to substitution, donate or withdraw electrons inductively, donate or withdraw electrons through resonance, and direct substitution either to the ortho/para or to the meta positions. From the lists of substituents, select the substituents that correspond to each indicated property. The substituents are written as -XY, where X is the atom directly bound to the aromatic ring.
1. Activation of the ring towards substitution.
a. CFS
b. NO2
c. OCOCH3
d. NH2
2. Withdrawal of electrons through resonance.
a. OH
b. S03H
c. CH3
d. COOH
Answer:
Activation of the ring towards substitution: NH2, OCOCH3
Withdrawal of electrons through resonance. COOH, SO3H
Explanation:
During electrophilic substitution, certain substituents may activate or deactivate the benzene ring.
Substitients that activate or deactivate the benzene ring may do so via resonance or inductive effect.
Groups such as -NH2 and OCOCH3 activate the ring via resonance while groups such as -SO3H and -COOH deactivate the ring via resonance.
What piece of equipment is used to pick up something that is hot
Answer:
Tongs
Explanation:
You should be wearing gloves too, but tongs is what you use.
URGENT HELP!!!! IN NEED OF EXPERT ANSWERS!!!PLEASE!!!!! WILL MARK BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!! My question is.... Would you consider the triple point of cyclohexane to be a chemical or physical property? Why?
Please watch a video on "Triple point of Cyclohexane." before responding
Answer:
Physical property
Explanation:
Physical properties differ from chemical properties in that a different substance is formed during a chemical process whereas, a physical property produces NO 'new' substance upon completion of change. By definition, 'Triple Point' is the temperature-vapor pressure value where the substance of interest exists in all three states simultaneously; that is, solid, liquid and gas. In this, the chemistry of cyclohexane remains unchanged regardless of temperature-pressure conditions and no new compounds are formed as products of change.
Example:
At the triple point of cyclohexane C₆H₁₂(s) ⇄ C₆H₁₂(l) ⇄ C₆H₁₂(g) ⇄ C₆H₁₂(s), the cyclohexane is still cyclohexane regardless of state and is classified as a physical process. The combustion of cyclohexane in the presence of oxygen, however, produces new substances (CO₂(g) and H₂O(g)) having chemical and physical properties different from original cyclohexane added in the process.
For the combustion of C₆H₁₂(g) => 2C₆H₁₂(g) + 13O₂(g) => 12CO₂(g) + 2H₂O(g) produces substances (CO₂(g) and H₂O(g)) having different physical and chemical properties than the C₆H₁₂(g) introduced into the system and is classified a chemical process.
Using the above conversions, how many miles are in 240 inches?
Answer:
0.00378788
Explanation:
Answer:
i think it the B
Explanation:
How do volcanoes change landforms
dont know but i hope this joke makes u feel better today
A lava rock quit his job at the volcano today
Said they took him for granite.
Which statements are part of the safety protocol for this lab experiment? Check all that apply.
Always wear nitrile gloves while handling chemicals such as water.
Do not throw around any of the athletic equipment used in this exercise.
Be careful not to spill when transferring water from the water displacement procedure; this could cause people to slip and fall.
Check containers, such as beakers, graduated cylinders, and buckets, for cracks or chips prior to use.
Avoid submerging sports equipment under water.
Answer: the answer is B, C, and D
Explanation:
Answer:
-Do not throw around any of the athletic equipment used in this exercise.
-Be careful not to spill when transferring water from the water displacement procedure; this could cause people to slip and fall.
-Check containers, such as beakers, graduated cylinders, and buckets, for cracks or chips prior to use.
Explanation:
hope it helps! correct on edge :)
What is the name of the longest running musical
and in what year did it premier?
Answer:
The longest-running show in Broadway history officially opened on January 26, 1988 and is still playing at the Majestic The Andrew Lloyd Webber musical won 7 1988 Tony Awards including Best Musical.
Explanation:
Brainliest plz?
Convert 55.6 km to m
show equation
Explanation:
1 km = 1000m
55.6 km = x m
x = 55.6*1000
x = 55600m
Answer:
55,600 meters
Explanation:
1km=1,000 meters
55.6km= 55,600 meters
An unknown compound contains only C , H , and O . Combustion of 5.60 g of this compound produced 13.7 g CO2 and 5.60 g H2O . What is the empirical formula of the unknown compound?
Answer:
Empirical formula of compound is C₄H₈O
Explanation:
Given data:
Mass of compound = 5.60 g
Mass of CO₂ = 13.7 g
Mass of H₂O = 5.60 g
Empirical formula of compound = ?
Solution:
Percentage of C:
13.7 g/5.60 g × 12/44× 100
2.45×0.273× 100 = 66.9%
Percentage of H:
5.60 g/ 5.60 g × 2.016/18 × 100
11.2%
Percentage of O:
(66.9% + 11.2%) - 100 = 21.9%
Grams atom of C , H, O
66.9/12 = 5.6
11.2 / 1.008 = 11.11
21.9 / 16 = 1.4
Atomic ratio:
C : H : O
5.6/1.4 : 11.11/1.4 : 1.4/1.4
4 : 8 : 1
Empirical formula:
C₄H₈O
7. On the surface of the Earth, the acceleration due to gravity is
O A. 8.9 pounds
O B.8.9 m/s2
C. 9.8 pounds
O D. 9.8 m/s2
T
What is the concentration in ppm if 1.6 g NH3 is dissolved into 147 mL of water?
A) 1.1×10^4 ppm
B) 0.0067 ppm
C) 0.011 ppm
D) 6.7×10^3 ppm
Answer:
Option A is correct.
Explanation:
Given data:
Mass of ammonia = 1.6 g
Volume of water = 147 mL
Concentration in ppm = ?
Solution:
As we know that,
1 g/mL = 1000000 ppm
1.6 g/147 mL = 0.011 g/mL
Now we will convert the 0.011 g/mL into ppm.
0.011 × 1000000 = 11000 ppm
In scientific notation:
1.1×10⁴ ppm
Thus, option A is correct.
need it by 4:20 please
Answer:
well 4.2 times 10 is 42 and 6.1 times 10 is 61
Explanation:
Can you classify solid and liquid please
Answer:
Solid : The intermolecular space is very less
Liquid : The intermolecular space is fairly more than in solids
Solid : It has a fixed shape
Liquid : It has a fixed volume but shape changes according to where it is placed
Solid : eg : Books
Liquid : eg : water
If my answer helped, kindly mark me as the brainliest!!
Thank You!!
Answer:
Liquids have the following characteristics:
No definite shape (takes the shape of its container).
Has definite volume.
Particles are free to move over each other, but are still attracted to each other
Explanation:
ye
Can we cover the earth with one mole of pennies?
Answer:
\no
Explanation:
What is the anion of the ionic compound HC2H3O2?
Answer:
Can u write in a paper and post again unable to understand
I can't understand this I need it done by 4:20
Answer:
well 6.3 times 10 is 63 and 6.7 times 10 is 67
Explanation:
How can a community help other communities affected by human rights violations
Answer:
the community needs to work alongside with government and religious organisations. the communities work on both profile and non profile work incase of human rights violations. they also force the government to take necessary action
What is the density of an unknown metal in g/mL if a sample of the metal has a volume of 520 mL and a mass of 2344 g?
Answer:
The correct answer is 4.5 g/mL.
Explanation:
To find the density, we must remember the formula for density, which is given by the following:
density = mass/volume
In this case, we are given both the mass and the volume, so we just need to plug in these values into the formula to solve for the density. This is modeled below:
density = mass/volume
density = 2344 g/520 mL
density = 4.5 g/mL
Therefore, the correct answer is 4.5 g/mL (notice that the units for our answer match what is being asked for in the problem).
Hope this helps!
what substance is given off when salt is heated gently?
Answer:
Water
Explanation:
When a salt solution is heated, the solvent (assumedly water) will evaporate at a greater rate because the water molecules have greater energy.
