All categories

3 years ago

A number should be rounded up if

Chemistry

1 answer:

Vedmedyk [2.9K]3 years ago

6 0

Answer:

C.) The number after it is between 5 and 9

Explanation:

If the digit to the right is less than five, you must leave the digit you want to round to as it is.

But, if the digit to the right is greater than or equal to five, you must increase the value of the digit you're rounding to by one. And any remaining digits before the decimal point become zeros, and any that are after the decimal point are dropped.

Hope this helps you out! : )

You might be interested in

Describe one technology used to travel to space and one technology used to return from space

marysya [2.9K]

technology includes spacecraft, satellites, space stations, and support infrastructure, equipment, etc..

8 0

3 years ago

What element has the lowest melting point

kap26 [50]

Helium (He) has the lowest melting point of -272.2 °C.

8 0

3 years ago

Which substances are released during cellular respiration?

scZoUnD [109]

Answer is: carbon dioxide and water are released during cellular respiration.
Chemical reaction of cellular respiration:
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O.
There are 18 oxygen atoms (six in glucose and twelve in six molecules of oxygen) in left side of chemical reaction and also 18 oxygen atoms (twelve in six molecules of carbon dioxide and six in six molecules of water) at the right.

8 0

3 years ago

What is the volume of 15.2 grams of SO2 at STP?

kiruha [24]

5.512 litres is the volume of 15.2 grams of sulphur dioxide gas at STP.

Explanation:

Data given:

mass of sulphur dioxide = 15.2 grams

conditions is at STP whech means volume = 22.4 litres

atomic mass of sulphur dioxide = 64.06 grams/mole

Number of moles is calculated as:

number of moles = $\frac{mas}{atomic mass of 1 mole}$

Putting the values in the equation:

number of moles = $\frac{15.2}{64.06}$

= 0.23 moles

Assuming that sulphur dioxide behaves as an ideal gas, we can calculate the volume as:

When 1 mole of sulphur dioxide occupies 22.4 litres at STP

Then 0.23 moles of sulphur dioxide occupies 22.4 x 0.23

= 5.152 litres is the volume.

5 0

3 years ago

If an atom or ion has an atomic number of 3, 2 electrons, and the electronic configuration is 2, what is the mass number?

rjkz [21]

It’s mass number would be 5 as it’s the protons and the neutrons added together

7 0

3 years ago