Answer:
Density= 3.68g/cm³
The object will sink in water
Explanation:
D=m/v
=350/95
=3.684
≈3.68g/cm³
Water= 1g/cm³
The object will sink in water because the object is denser than the water.
3.684g/cm³ is the density of an object that has a mass of 350 g and a volume of 95 cm³. The object will sink in water.
What is density?The density of a material (volumetric density and specific mass) is its mass per unit volume. The most common sign for density is however the Roman letter D can be used as well. Density is defined mathematically as mass divided with volume.
The density of a pure material has the same numeric values just like its mass concentration. Various materials have varied densities, and density can be important in terms of buoyancy, purity, and packing.
D=m/v
=350/95
=3.684g/cm³
The object will sink in water
Therefore, 3.684g/cm³ is the density of an object that has a mass of 350 g and a volume of 95 cm³. The object will sink in water.
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what are binory compounds
Answer:
You meant binary compounds ryt?
Then,
Binary compounds are chemical compounds comprising of two distinct elements
Which rule for assigning oxidation numbers is correct?
a.)Hydrogen is usually -1
b.)Oxygen is usually -2
c.)A pure group 1 element is +1
d.)A monatomic ion is 0
Answer:
Answer... Option B. Oxygen is usually -2; except in Peroxides
Select the correct structure that
corresponds to the name.
4-bromo-5-chlorocyclohexene
Answer: a
Explanation:
Iodine-131 half life 8.040 how long will it take for a 40 gram sample of iodine-131 to decay to 0.75 grams
Answer:
See explanation below
Explanation:
To get this, we need to apply the general expression for half life decay:
N = N₀e(-λt) (1)
Where:
N and N₀ would be the final and innitial quantities, in this case, masses.
t: time required to decay
λ: factor related to half life
From the above expression we need λ and t. To get λ we use the following expression:
λ = t₁₂/ln2 (2)
And we have the value of half life, so, replacing we have:
λ = 8.04 / ln2 = 11.6
Now, we can replace in (1) and then, solve for t:
0.75 = 40 exp(-11.6t)
0.75 / 40 = exp(-11.6t)
ln(0.01875) = -11.6t
-3.9766 = -11.6t
t = -3.9766 / -11.6
t = 0.34 dayshelp plz Question 8(Multiple Choice Worth 2 points)
(01.05 LC)
Which states of matter have the same volume when moved?
Gases and liquids
Gases and solids
Liquids and solids
Solids, liquids, and gases
Explanation:
(Gases and liquids )
is the answer
Gases and liquids are the states of matter that have the same volume when moved.
Hope it helps you
The greenhouse gas released into the atmosphere as a result of livestock digesting their food is called carbon dioxide
True
False
Answer:
False
Explanation:
Cows and other livestock release methane, which is a gas like Carbon Dioxide, but not the same thing, even though it does contribute into Carbon Dioxide.
Which type of circuit has more than one path?
Answer:
parallel circuit
Explanation:
Hope this is right!!
What is the pOH of a solution with [OH-] = 1.4 x 10-13?
O A. -13.15
B. 14.00
C. 12.85
D. 13.15
Answer:
C. 12.85
Explanation:
just did
I'LL GIVE BRAINLIEST PLS HELP
How does a new DNA molecule ensure that it has the same nucleotide sequence as the original DNA?
Answer:
This strand contains nucleotides that are complementary to those in the template sequence. Base pairing ensures that the sequence of nucleotides in the existing template strand is exactly matched to a complementary sequence in the new strand, also known as the anti-sequence of the template strand
Nearly ¾ of the world's surface is covered with water so most of the earth's living things live in the
Answer:
ocean
Explanation:
aavssdbvsvasgvesvdbvsvdbvv
Answer:
oceans/lakes/ponds/rivers/creeks/seas
Explanation:
a compound formed when atoms of two or more different elements share electrons
a compound formed when atoms of two or more different elements share electrons
This statement is true.
What is the name of P2O in Chemistry?
P2O : Summary
Code P2O
Molecule name 3-PROP-2-YN-1-YL-1,3-OXAZOLIDIN-2-ONE
Synonyms 1-(PROP-2-YNYL)-OXAZOLIDINE-2-ONE
Systematic names Program Version Name ACDLabs 10.04 3-prop-2-yn-1-yl-1,3-oxazolidin-2-one OpenEye OEToolkits 1.5.0 3-prop-2-ynyl-1,3-oxazolidin-2-one
A sexually mature seahorse can produce thousands of offspring. What is the BEST reason overproduction of offspring by marine organisms is considered to be a reproductive advantage?
A:It increases competition.
B: It decreases competition.
C: It contributes to the organism’s biological success.
D: It causes stress on the environment which will apply stress to the creature to adapt.
The number of molecules in 1.00 liter of O2 gas at 56◦C and 821 torr is
1. 1.83 × 1025 molec.
2. 32 molec.
3. 2.24 × 1023 molec.
4. 2.41 × 1022 molec.
5. 4 × 10−2 molec.
Answer:
2. 2.41 x 10^22 molec
Explanation:
Answer:
2. 2.41 x 10^22 molec
Explanation:
the other person said that and i got right on my quiz
How many grams would be in 1.752 x10^26 formula units of Ca(No3)2
Answer:
47730 grams.
Explanation:
First we convert 1.752x10²⁶ formula units of Ca(NO₃)₂ into moles, using Avogadro's number:
1.752x10²⁶ formula units ÷ 6.023x10²³ formula units/mol = 290.88 molThen we convert 290.88 moles of Ca(NO₃)₂ into grams, using the molar mass of Ca(NO₃)₂:
290.88 mol * 164.088 g/mol = 47730 gIn the process of fossil formation, what materials replace the
organism's remains?
A. ice
B. minerals
C. soil
D. water
Answer:
D.water
Explanation:
Petrified fossils form when minerals replace all or part of an organism. Water is full of dissolved minerals. It seeps through the layers of sediment to reach the dead organism. When the water evaporates, only the hardened minerals are left behind.
Please help im testing and need an answer as soon as possible
Kaya collects the data shown in the table.
A 2-column table with 3 rows. The first column labeled Quantity has entries Voltage, Current, Resistance. The second column labeled Value has entries 6.0 volts, 0.3 Amperes, empty.
What is the resistance in the circuit?
0.05
1.8
5.7
20
Answer:
20
Explanation:
not sure please correct me if im wrong
Answer:
20
Explanation:
Got it right on time 4 learning
15.True or False:
The concentration of a solution can be increased indefinitely by
adding solute
Measurements of half-life make radioactive isotopes useful for
an organism that a parasite lives in or on is a
A. prey
B. host
C. consumer
D. prey
What is the pH of the solution if the [H3O+] concentration is 2.5 X 10-4 M?
HELP I'M DESPERATE! NO LINK!
Answer:
3.60
Explanation:
To calculate the pH of any solution, use the formula;
pH= -log[ concentration ] and for this case take pH= -log[H3O+]
= -log[2.5x10^-4]
therefore pH= 3.60
The idea of pH mainly applies in the determination of the nature of various solutions to the used in the chemical analysis. The correct pH must be determined in order to get accurate results. Ionic equillibria mostly involves the calculations involving pH which is normally obtained after determination of equilibrium concentrations.
what uses a coil that is a temporary electromagnet
Answer: transformers, generators ,inductors, electric motors
Explanation:
what is electromagnetic?
Answer:
relating to the interrelation of electric currents or fields and magnetic fields.
Which statement describes the Richter scale?
It cannot account for fault movement during an earthquake.
It measures large earthquakes far from the seismograph.
It estimates the total energy released from an earthquake.
It increases in magnitude as amount of damage increases.
Answer:
It measures large earthquakes far from the seismograph.
Explanation:
It uses a seismograph to measure earthquakes far from the seismograph where seismic waves are used to determine the magnitude of an earthquake.
Answer: d. It increases in magnitude with an increase in size of seismic waves.
Explanation:
How much Pb(NO3)2 would need to be added to 100 mL of water to make a saturated solution at 40°C.
Answer:
70g of Pb(NO3)2 would need to be added
Explanation:
As you can see in the solubility graph of lead nitrate, Pb(NO₃)₂, the solubility of this salt (That is, the maximum amount of the salt that can be dissolved in 100g of the solvent producing a homogeneous solution) is 70g in 100g of water = 70g of the salt in 100mL of water.
A saturated solution is also defined as solubility: The maximum amount of a solute that can be dissolved in a solvent.
That means:
70g of Pb(NO3)2 would need to be added
Help meeeeee
A 280.0 sample of neon gas exerts a pressure of 660.0 mm Hg at 26.0°C. Assuming that the pressure remains constant, at what temperature in would the volume change to 440.0 ml?
Answer:
469.9K
Explanation:
Using Charles's law equation:
V1/T1 = V2/T2
Where;
V1 = initial volume (ml)
V2 = final volume (ml)
T1 = initial temperature (K)
T2 = final temperature (K)
Based on the information provided:
V1 = 280.0ml
V2 = 440.0 ml
T1 = 26.0°C = 26 + 273 = 299K
T2 = ?
Using V1/T1 = V2/T2
280/299 = 440/T2
0.936 = 440/T2
T2 = 440 ÷ 0.936
T2 = 469.9K
Which is the correct Lewis dot structure of NH2?
H-N-H
H-N-H
A.
B.
N-H-H
H-N-H
C.
D.
-H-N-H
E.
ОА А
ов. В
C C
OD D
ОЕ Е
Answer:
D
Explanation:
If a book has a weight of 23.2 N on Earth, what is its mass?
Answer: Mass is 2,37 kg
Explanation: Weight G = mg, and g = 9.81 m/s² on Earth.
m = W/g = 23.2 N / 9.81 m/s²
How many moles of gallium chlorate, Ga(ClO3)3, must react in order to produce 674 kJ of energy according to the following reaction? 2 Ga(ClO3)3 à 2 GaCl3 + 9 O2 DH = - 130.4 kJ
Answer:
10.3 mol Ga(ClO₃)₃
Explanation:
Let's consider the following balanced thermochemical equation.
2 Ga(ClO₃)₃(s) ⇒ 2 GaCl₃(s) + 9 O₂(s) ΔH = - 130.4 kJ
According to the balanced thermochemical equation, 130.4 kJ of heat are released when 2 moles of gallium chlorate react. The number of moles of gallium chlorate that must react to produce 674 kJ of energy is:
674 kJ × 2 mol Ga(ClO₃)₃/130.4 kJ = 10.3 mol Ga(ClO₃)₃
Thermochemical equations are chemically balanced equations that take into account both the energy change and the physical states of all reactants and products. Energy is a reactant in an endothermic process, whereas it is a product in an exothermic reaction. Here the moles of Ga(ClO₃)₃ is 10.3 mol.
Let's consider the following balanced thermochemical equation.
2Ga(ClO₃)₃(s) ⇒ 2GaCl₃(s) + 9O₂(s) ΔH = - 130.4 kJ
According to the balanced thermochemical equation, 130.4 kJ of heat is released when 2 moles of gallium chlorate react. The number of moles of gallium chlorate that must react to produce 674 kJ of energy is:
674 kJ × 2 mol Ga(ClO₃)₃ / 130.4 kJ = 10.3 mol Ga(ClO₃)₃
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The estimate obtained from a sample of which size is likely to be closest to
the actual parameter value of a population?
O A. 15
B. 30
C. 85
D. 50
the closest value is C, 85.
hope it helps!!!!
85 is the estimate value that is obtained from a sample of which size is likely to be closest to the actual parameter value of a population. Therefore, the correct option is option C.
What is population?A population is the entire set of people in a group, whether that group is a country or a collection of people who share a certain trait. A population is the group of people where a statistical sample has been collected in statistics. Hence, a population is any collection of people who have something in common.
A statistically substantial chunk of a population, rather than the full population, may also be referred to as a sample. For this reason, the standard deviation, meaning standard error, of a statistical study of a sample from the full population must be disclosed. Only a population-wide analysis would have zero standard deviation. 85 is the estimate value that is obtained from a sample of which size is likely to be closest to the actual parameter value of a population.
Therefore, the correct option is option C.
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