Help :(
Convert 539 dag/dm3 to cg/mm3.

Answer:

The answer to your question is given below.

Explanation:

Rate is simply defined as quantity per unit time. Mathematically it is represented as:

Rate = Quantity /time

Thus, we can obtain the rate as follow:

1. Quantity = 20 sandwich

Time = 10 mins

Rate =?

Rate = Quantity /time

Rate = 20/10

Rate = 2 sandwich per mins

2. Quantity = 30 sandwich

Time = 10 mins

Rate =?

Rate = Quantity /time

Rate = 30/10

Rate = 3 sandwich per mins

3. Quantity = 40 sandwich

Time = 10 mins

Rate =?

Rate = Quantity /time

Rate = 40/10

Rate = 4 sandwich per mins

4. Quantity = 50 sandwich

Time = 10 mins

Rate =?

Rate = Quantity /time

Rate = 50/10

Rate = 5 sandwich per mins

Thus, the complete table is given as follow:

Quantity >> Unit of measure >> Rate

10 >>>>>>> 10 min >>>>>>>>>> 1

20 >>>>>>> 10 min >>>>>>>>>> 2

30 >>>>>>> 10 min >>>>>>>>>> 3

40 >>>>>>> 10 min >>>>>>>>>> 4

50 >>>>>>> 10 min >>>>>>>>>> 5

Answer:

1)Krypton

2)11H

Explanation:

electrons=protons

protons=atomic number

mass number=protons+neutrons

mass number is the superscript

atomic number is the subscript.

1)The answer is Krypton because its atomic number= number of protons=number of electrons is 36.

mass number is 46+36=82.

2)subscript=atomic number=number of protons=number of electrons

i. H = electrons=1

=neutrons=0

ii. Cl=electrons=17

=neutrons=35-17=18

iii. Na=electrons=11

=neutrons=23-11= 12

so the answer is Hydrogen because it has 1 electron and 0 neutron.

I hope this helps.

Answer: 0.0006L

Explanation:

The density of a substance is given by the expression;

Density = Mass / Volume

Density = 50g/ml,  Mass = 30g,   Volume = ?

Making volume the subject of formular, we have;  Volume = Mass / Density

∴ Volume = 30 g / 50g/ml = 0.6ml, then to Litre, we divide by 1000

The amount in Litres i bought is 0.0006L

Answer:

hello, i believe there's more information given on the question. could this be a multiple choice question? if yes please comment it below so i can further assist you.

Your question has been heard loud and clear.

Well , as the helium flows from tank to balloons , the helium inside the tank decreases , so air fills the remaining space inside the tank. Also , helium is stored under high pressure in the tank because , helium is lighter than air , so its molecules have high energy and this energy causes pressure which increases the temperature. Once the helium is let out , the tank cools down.

Thank you

Answer:

B). The height of the water in the jar.

Explanation:

A dependent variable is characterized as the variable that observes the change or effect caused by experimental manipulation in the independent variable. It is the variable that is being tested in the experiment. In the given experiment of the burning candle, 'the height of water in the jar' will rise or drop with manipulation in the independent variable i.e. 'the number of candles.' Since it is affected by the alteration in other variables, it is the dependent variable. Thus, option B is the correct answer.

Answer:

4.167 hours

Explanation:

The drop factor is the amount of fluid falling for one millimeter of fluid in gttt/ml.

The flow rate is the volume administered for a specific period of time in ml/hr = volume / time

The unit of drip rate is gtt/min

The formula that shows the relationship is:

Drip rate = flow rate × drop factor

Given that:

Drip rate = 60 gtt / min, Flow rate = volume / time = 500 ml / t, drop factor = 30 gtt/ml

Drip rate = flow rate × drop factor

60 = 500 / t × 30

500 / t = 60/30

500 / t = 2

2t = 500

t = 500/2

t = 250 mins

1 hr = 60 min

t = 250 / 60 hours = 4.167 hours

Answer:

A

Explanation:

Pyridoxal phosphate is your answer

Answer:

0.283 min.

0.1 km

Explanation:

Since there are 60 seconds in 1 minute, divide the time Lauren ran by 60.

17/60 = 0.283 min.

Since there are 1000 meters in 1 kilometer, divide the distance by 1000.

100/1000 = 0.1 km

Answer:

Inferring is when a scientist uses reasoning to explain or interpret the things they observe

Answer:

science is valued by the society because the application of scientific knowledge helps to satisfy many basic human needs and improve living standards

Explanation:

Finding a cure for cancer and a clean form of energy are just two typical examples

Answer:

Science is about a whole lot more than that and to sum it up we believe that science is a way of helping the brain grow in finding new knowledge and helps us defeat our curiosity of how the world develops and works today. Science is important because it has helped form the world that we live in today.

Explanation:

In other words, science is one of the most important channels of knowledge. It has a specific role, as well as a variety of functions for the benefit of our society: creating new knowledge, improving education, and increasing the quality of our lives. Science must respond to societal needs and global challenges.

w h y d I d t h I s t a k e m e s o l o n g

Answer:

Forming a problem requires the scientist to  use creativity to imagine new solutions.

Explanation:

Albert Einstein remains a critically prominent figure who conducted remarkable, ground-breaking research that not only formed the foundations of modern physics but also strongly affected the scientific world. It is difficult to teach imagination but it can be harnessed and accepted. Nothing incites our imaginative impulses we love more than the prospect of immediate creative inspiration. And creativity hits its full potential when paired with the experience, insights, and skills people gained by questioning the real-life problems.

Answer:

Your answer would be B, forming a problem requires the scientist to use creativity to imagine new solutions.

Explanation:

Got it right on Edge 2020. Hope this helps you!

Your question has been heard loud and clear.

Well , if youre talking about chemistry , then yes youre right , Appearance and mass are totally different concepts , appearance of any substance only depends on how the surfaces absorb and relfect light. Mass , well it is constant for a system and will never change , appearance of a system may change but not because of mass.

Thank you

Answer:

Five significant figures

Explanation:

You have to change the number to standard form

340500 = 3.405×10**5

** means raise to power

10**5

Where five represents the number of significant figures.

Answer:

4!

Explanation:

Answer:

The percentage error is -2.4 %

Explanation:

The percentage error is calculated by the following formula;

[tex]Percentage \ error = \dfrac{Approximate - Exact }{Exact}[/tex]

The given parameters are;

The atomic mass of cobalt = 58.933 amu. =  The exact value

The mass of cobalt as measured by the scientist = 57.514 = The approximate value

Therefore, the percentage error is given plugging in the values into the above equation for percentage error as follows;

[tex]Percentage \ error = \dfrac{(57.514- 58.933 )}{58.933 } \times 100 = -2.41\%[/tex]

The percentage error = -2.4 %.

. The atom has 2 more electrons than protons giving it a negative charge (2-)

Answer:

You may be saving someone from a rock slide, where the rocks will fall at any time, before they fall they have potential energy.

The one way that potential energy might be involved in rescue team missions to save someone to fall is potential energy is used to hold one.

Gravity is the interaction that is because of the force of energy between the surface of the earth to the mass or any energy present on the earth's surface and the force becomes double with the weight.

The potential energy is a form of energy that is used against gravity to do the work which required energy and in rescue, the energy is needed in every coss to save one.

Therefore, one way that potential energy might be involved in rescue team missions to save someone to fall is because gravitational potential energy is used to hold one.

Learn more about  gravity, here:

https://brainly.com/question/13810323

#SPJ2

Answer:

am can u pliz tell me more about ur qtn

Explanation:

like a nuclear of a what

maybe a plant or and animal

Answer:

Orbiting electrons

Explanation:

1. When two substances at different temperatures come into contact, the substance that is at higher temperature will transfer energy, to the substance at a lower temperature such that their temperature become balanced.

By the law of conservation of energy the heat released by the substance initially at a higher temperature, is the same amount of heat gained by the substance originally at a lower temperature.

2. A calorimeter contains reactants and a substance to determine the heat absorbed, or the heat capacity of materials. This is done using the following equation, Q = mcΔT, where Q = 'heat absorbed / released.'

________________________________

3. We can calculate the energy released by the sodium acetate knowing that all the heat released is absorbed by the water (Part # 1).

[tex]\mathrm{Q =\:m * c * change\:in\:temperature} ,[/tex]

[tex]\mathrm{Q =\:500 * 4.18(specific\:heat\:of\:water) * \mathrm{32.2C -25C} } ,[/tex]

[tex]\mathrm{Q} = 500 * 4.18 * (32.3 - 25) = 15257 \mathrm{J} = 15.257 \mathrm{kJ}[/tex]

Now the enthalpy of fusion is expressed in kJ/mol, so we have to first calculate the moles of sodium acetate.

moles = mass / molar mass

Remember that the molar mass of sodium acetate is 82.0343 g/mol. Therefore the moles will be 100 / 82.0343 = 1.219 mol. Respectively the enthalpy should be 15.257/1.219 = 12.516 kJ/mol.

Answer:

4.875 × 105

(scientific notation)

= 4.875e5

(scientific e notation)

= 487.5 × 103

(engineering notation)

(thousand; prefix kilo- (k))

Explanation:

This all the ways

Dependent variable: Weight

Independent variable: Amount of food

Explanation:

In experiments such as the one described, there are two or more factors involved, which act as variables. Additionally, these factors can be classified as dependent or independent. The difference between these two is that the independent factor is changed on purpose by the researcher. This occurs with the amount of food as each dog receives a different amount of food and this is controlled by the researcher.

On the other hand, the dependent variable is the main factor analyzed in the experiment or the factor that is modified by the independent variable. In the experiment presented, the dependent variable is weight because in this experiment the focus is to analyze how weight changes with different amounts of food, and this factor is affected by the independent variable.

Answer:

32.25

Explanation:

8NH3 + 3Cl2 → 6NH4Cl + N2

NH3 = 17 g/mol

number of moles = 1

NH4Cl= 43 g/mol

number of moles = 3/4

mass= 43 × ¾ ≈ 32.25 g

Answer:

40.1

Explanation:

its correct your welcome

Answer:

Explanation:

Reduction potential of Copper metal is .34 V and reduction potential of Calcium is - 2.87 V . So copper will not be able to reduce Calcium chloride to calcium . Hence no reaction will take place when a piece of copper metal is placed in calcium chloride solution .

Answer:

1200 J/K  

Explanation:

The formula for the entropy associated with a reversible phase change is

[tex]\Delta S= \dfrac{q_{\text{rev}}}{T}[/tex]

For a reversible phase change like melting,

[tex]q_{\text{rev}} = m\Delta_{\text{fus}}H[/tex]

Data:

Mass of ice = 1.0 kg

T = 0 °C

Calculations

1. Convert the mass of ice to grams

[tex]\text{Mass of ice} = \text{1.0 kg } \times \dfrac{\text{1000 g}}{\text{1 kg}} = \text{1000 g}[/tex]

2. Convert the temperature to kelvins

T = (0 + 273.15) K = 273.15 K

3. Calculate the heat needed to melt the ice

[tex]q_{\text{rev}} = m\Delta_{\text{fus}}H = \text{1000 g} \times \dfrac{\text{334 J}}{\text{1 g}} = \text{334 000 J}[/tex]

4. Calculate the entropy change

[tex]\Delta S = \dfrac{q_{\text{rev}}}{T} = \dfrac{\text{334 000 J}}{\text{273.15 K}} = \textbf{1200 J/K}[/tex]

Answer:

The Milky Way

Explanation:

Answer:

The Milky Way

Explanation:

Answer:

Earth's rotation is the rotation of Planet Earth around its own axis.

Explanation:

Earth rotates eastward, in prograde motion. As viewed from the north pole star Polaris, Earth turns counterclockwise.

Answer:

this is your answer hope it helps you