which of these has 170 degree in fahrenheit and
Answer:
we know the formula to convert Fahrenheit to Celsius =(F-32)(5/9)
=(107-32)(5/9)
=(75)(5/9)=375/9=41.6degree Celsius
Im dum.b help
When a grasshopper egg hatches, a baby grasshopper called a pupa comes out of the egg and begins to grow. Although the nymph grasshopper already looks like a grasshopper, it still needs to molt its exoskeleton many times before becoming a full-grown adult."
Which statement corrects the error in the passage?
Question 3 options:
A baby grasshopper is a larva.
A baby grasshopper is a nymph.
The grasshopper nymph hatches.
The nymph has no exoskeleton.
Answer:
2.A baby grasshoper is a nymph.
Explanation:
Answer:
yourinagenjitsulol
Expert
75 answers
3.6K people helped
Answer:
2.A baby grasshopper is a nymph.
Explanation:
i agree
9.32 x 1024 atoms of NaOH
Explanation:
65463.68 atoms of NaOh I believe.. I really dont know sorry
How do you create a sedimentary
rock?
Help please!!!!15 points
(Popcorn Stand) A salt shaker has 2.91 moles of NaCl, how many grams of NaCl are in the salt shaker?
Answer:
170 grams NaCl
Explanation:
Find the mass of NaCl by adding the two elements atomic mass
Na: 22.99
Cl: 35.45
22.99+35.45=58.44 g
Convert moles to grams.
2.91 mol NaCl * 58.44 g NaCl= 170.0604 g
In the molar volume of a gas lab, a student
failed to determine the actual volume of
the flask used to collect the gas and
instead used the marking on the flask,
125 ml, as the volume. How will this affect
the student's results?
Answer:
A
Explanation:
A 1,000 kg ball traveling at 5m/s would have kinetic energy
Answer:
yes
Explanation:
Answer: 10 times more
10 times less
The same
Explanation:
e d g e b u t t ( i just got it wrong lol) but this is right:)
Using the balanced equation below, how many moles of water can be produced when 4 grams of Hydrogen react?
Answer:
2 moles of water (H₂O)
Explanation:
We'll begin by calculating the number of mole in 4 g of Hydrogen. This can be obtained as follow:
Mass of H₂ = 4 g
Molar mass of H₂ = 2 × 1 = 2 g/mol
Mole of H₂ =?
Mole = mass / Molar mass
Mole of H₂ = 4/2
Mole of H₂ = 2 moles
Finally, we shall determine the number of mole of water (H₂O) produced by the reaction of 4 g (i.e 2 moles) of H₂. This can be obtained as follow:
2H₂ + O₂ —> 2H₂O
From the balanced equation above, we can see that 2 moles of H₂ reacted to produce 2 moles of H₂O.
Thus, 2 moles of water (H₂O) were obtained from the reaction.
Calculate the density (g/ml) of mineral that has volume (total space occupied by something) of 3.8 ml and a mass of 22.4 g.
A- 5.9 g/ml
B- 85.1 g/ml
C- 0.17 g/ml
D- 26.2g/ml
Answer:
D
Explanation:
Which of the following dilutions would produce 2.0M acid from 3.0M acid
A) 3.0mL acid and 2.0mL water
B) 2.0mL acid and 1.0mL water
C) 2.0mL acid and 3.0mL water
D) 1.0mL acid and 2.0mL water
Answer:
that's a little bit difficult question
Explanation:
sorry !
1. A 4.00 L sample of air at 35 degrees C expands to 5.50 L when heated. What is
the new temperature, in degrees Celsius, of the air
Answer:
150.5 °C
Explanation:
From the question given above, the following data were obtained:
Initial volume (V₁) = 4 L
Initial temperature (T₁) = 35 °C
Final volume (V₂) = 5.5 L
Final temperature (T₂) =?
Next, we shall convert 35 °C to Kelvin temperature. This can be obtained as follow:
T(K) = T(°C) + 273
Initial temperature (T₁) = 35 °C
Initial temperature (T₁) = 35 °C + 273
Initial temperature (T₁) = 308 K
Next, we shall determine the final (i.e the new) temperature of air. This can be obtained as follow:
Initial volume (V₁) = 4 L
Initial temperature (T₁) = 308 K
Final volume (V₂) = 5.5 L
Final temperature (T₂) =?
V₁ / T₁ = V₂ / T₂
4 / 308 = 5.5 / T₂
Cross multiply
4 × T₂ = 308 × 5.5
4 × T₂ = 1694
Divide both side by 4
T₂ = 1694 / 4
T₂ = 423.5 K
Finally, we shall convert 423.5 K to celsius temperature. This can be obtained as follow:
T(°C) = T(K) – 273
T₂ = 423.5 K
T₂ = 423.5 – 273
T₂ = 150.5 °C
Thus, the new temperature of the air is 150.5 °C
What is the density of a 32g toy car that
has a volume of 8cm3?
A. 256alcm3
An3
Answer:
density=mass/volume
density=32/8
density=4
C2H6(g) + O2(g) → CO2(g) + H2O(g)
Answer:
2C2H6 + 7O2 --> 4CO2 + 6H20
Explanation:
Balanced equation
How many moles are there in 17.6g NaOH?
Answer:
The answer is 39.99711. We assume you are converting between grams NaOH and mole. You can view more details on each measurement unit: molecular weight of NaOH or mol This compound is also known as Sodium Hydroxide.
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 0.44moles are there in 17.6g NaOH.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number. The stoichiometry represents the number of moles.
Mathematically,
number of moles of NaOH =given mass of NaOH÷ molar mass of NaOH
Molar mass of 1 mole of NaOH= 40 g/mol
mass of NaOH= 17.6g
Substituting all the given values in the above equation, we get
number of moles of NaOH = 17.6g ÷ 40 g/mol
number of moles of NaOH =0.44moles
Therefore, 0.44moles are there in 17.6g NaOH.
To know more about mole, here:
https://brainly.com/question/15209553
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Newton's Third Law of Motion states that objects exert equal forces on each other in opposite directions.
Which of the following examples best describe Newton's Third Law of Motion?
O
A. waiter pulls off the tablecloth but the dishes remain
O
B. a ball rolling down and incline plane
C. a baseball bat resting against a wall
D. truck crashes into a car
Answer:
Truck crashes into a car
Which substance contains positive ions immersed in a sea of mobile electrons?
a. O2 (s)
b. CuO (s)
c. Ag (s)
d. SiO2 (s)
The substance, silver (Ag), we can see positive ions immersed in a sea of mobile electrons.
What is metallic bond?The term metallic bond refers to the bonding between metal atoms. This bonding consists of positively charged ions and a sea of electrons bonded together electrostatically.
Hence, in the substance, silver (Ag), we can see positive ions immersed in a sea of mobile electrons.
Learn more about metallic bond: https://brainly.com/question/5147266
Which of these human development stages occurs after childhood?
1. infancy
2. adulthood
3. maturation
4. adolescence
Answer:
4 Adolescence
Explanation:
Adolescence is the human development stages occurs after childhood. Hence option 4 is correct.
What is human development?Human development is defined as expanding people's freedoms and opportunities while also enhancing their well-being. The true freedom that everyday individuals have to choose who they are, what they do, and how to live is what human growth is all about. This discipline tries to comprehend the numerous transformations that people and their relationships go through as they learn and develop.
The youngster reaches puberty during the adolescent stage. A abrupt rise in hormones causes a variety of emotional and mental changes throughout this time. The body's major and secondary sex traits develop during a significant growth spurt phase.
Thus, adolescence is the human development stages occurs after childhood. Hence option 4 is correct.
To learn more about human development, refer to the link below:
https://brainly.com/question/14911955
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How does environmental changes affect animals?
Environmental changes affect animals depending on their ability to adapt to new conditions.
What is adaptation?An adaptation is any type of phenotypic feature associated with a higher fitness in a particular environment.
Adaptations are features that allow organisms to adapt to challenging environmental conditions.
In conclusion, environmental changes affect animals depending on their ability to adapt to new conditions.
Learn more about animal adaptations here:
https://brainly.com/question/29594
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Limonene is an oil from oranges and lemons. Click on all the carbon
atoms its structures that have a trigonal planar molecular geometry.
Answer:
See explanation
Explanation:
Limonene is an oil from oranges and lemons. Its structure has been shown in the image attached to this answer.
There are two different groups of carbon atoms in limonene. One group of carbon atoms are sp2 hybridized while the other group are sp3 hybridized. The group of carbon atoms that are sp2 hybridized have a trigonal planar geometry and have been accurately labeled in the image attached while the carbon atoms that are sp3 hybridized were also labelled and have a tetrahedral geometry.
Hence in limonene, there are trigonal planar and tetrahedral carbon atoms.
32 g of CH4 react with 128 g of O2, producing 88 g of CO2. How many grams of water are produced?
Answer:
88 g
Explanation:
32 g of CH4 react with 128 g of O2, producing 88 g of CO2.
What’s Neon family number? And period?
Answer:
18 and Period 2
Explanation:
Neon (Ne), chemical element, inert gas of Group 18
Neons period on the periodic table is period 2.
I think it’s D but I’m not sure.. Please help!
Answer: I think it’s D?
Explanation:
Answer:
D.
Explanation:
Weathering, erosion and deposition are processes that can wear a mountain down.
HNO3 + KOH → ____ + _____
Answer:
HNO3 + KOH → _KNO3___ + __H2O___
Explanation:
It's balanced
hope it helps
How much carbon dioxide will be formed if 12.5 grams of oxygen reacts with 7.2 grams of propane?
Answer:66 grams of Carbon Dioxide.
Explanation:
The common currency of chemistry is moles. So it is necessary to change the mass of propane to moles. Then write a balance equation so the moles of propane to moles of Carbon Dioxide. Finally moles of Carbon Dioxide must be changed to grams.
C 3 H 8 + 5 O 2 = =3 C O 2 + 4 H 2 O
This is the balance equation for the burning of propane in Oxygen.
From the equation it can be seen that 1 mole of propane makes 3 moles of Carbon Dioxide a ratio of 1:3
Convert 22 grams of propane to moles by dividing by the molar mass of propane.
3 x 12 = 36 grams
1 x 8 = + 8 grams
total = 44 grams/ mole.
22
44
= .5 moles of propane.
Using the ratio of 1:3 .5 = 3( .5) = 1.5 moles of Carbon Dioxide.
Now multiply 1.5 moles of Carbon Dioxide by the molar mass of Carbon Dioxide
1 x 12 = 12 grams
2 x 16 = +32 grams
total = 44 grams /mole.
1.5 moles x 44 grams/mole = 66 grams.
hope that helps :)
Use the periodic table to determine which of the
following could be an isotope of bromine (Br).
Check all that apply.
Z = 79, A = 196
Z = 35, A = 79
A = 79, N =44
D Z = 44, N = 44
Answer:
A=79,N=44
Z=35,A=79
Answer:
Explanation:
Answer:
A=79,N=44
Z=35,A=79
What force is necessary to accelerate a 1,200 kg car at a rate of 35 m/s2?
How much acceleration would the car have if a 30,600 N force was applied to
the car?
Explanation:
Given that,
Mass of a car, m = 1200 kg
Acceleration of the car, a = 35 m/s²
The force acting on the car is given by :
F = ma
F = 1200 kg × 35 m/s²
= 42000 N
If the force is 30,600 N, then acecleration is given by :
[tex]a=\dfrac{F}{m}\\\\a=\dfrac{30600}{1200}\\\\a=25.5\ m/s^2[/tex]
Hence, this is the required solution.
Which set of data is more precise?
O 1, 2, 1, 2
O 1,1.5, 1.5, 1
O 0.5, 1, 2,1.5
O 1, 2, 2, 1.5
Answer:
01,1.5,1.5,1
Explanation:
What is the mass of 3.00x10^23 particles of water? Water has a molar mass of 18.0 g/mol.
8.97 g H₂O
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Stoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
3.00 × 10²³ particles H₂O
Step 2: Identify Conversions
Avogadro's Number
[Given] Molar Mass of H₂O - 18.0 g/mol
Step 3: Convert
Set up: [tex]\displaystyle 3.00 \cdot 10^{23} \ particles \ H_2O(\frac{1 \ mol \ H_2O}{6.022 \cdot 10^{23} \ particles \ H_2O})(\frac{18.0 \ g \ H_2O}{1 \ mol \ H_2O})[/tex]Multiply/Divide: [tex]\displaystyle 8.96712 \ g \ H_2O[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
8.96712 g H₂O ≈ 8.97 g H₂O
A company uses chlorine to produce titanium chloride from titanium dioxide.
What is the relative formula mass (Mr) of titanium dioxide, TiO2?
Relative atomic masses (Ar): O = 16 Ti = 48 *
Answer:
80 g/mol
Explanation:
The Relative formular mass is the sum of the relative atomic masses of the elements present in the molecule.
TiO2;
There is one Ti atom and 2 O atom. Their atomic masses is given as;
TiO2 = 48 + 2(16) = 48 + 32 = 80 g/mol
Some molecules in air contain .
Explain how atoms from the air can become part of human cells
The atoms in air are combined with oxygen present in the air and when we inhale the air, oxygen is moved into the body then atoms in oxygen are carried by red blood cells the blood is pumped to the lungs and when oxygen is transported to the body organ, the atoms in lungs become the part of human cells.
which one is ittt? help please:)
Answer:
b
Explanation: