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PSYCHO15rus [73]
3 years ago
7

If a doctor wants to know how fast your heart is beating, what would they do ​

Chemistry
1 answer:
Sergio [31]3 years ago
5 0

Answer:

Use a stethoscope....?

what are the answer choices?

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Do you think it is a good idea for all scientists to use the same periodic table of elements? Why or why not?
postnew [5]
Yes because what other else can a scientist have
7 0
2 years ago
What is the solution to the problem rounded to the correct number of significant figures? 8.01 × 4.1 = ? A. 32.8 B. 32.84 C. 32.
kicyunya [14]

<u>Answer:</u> The correct option is Option D.

<u>Explanation:</u>

Significant figures are defined as the figures that represent the digits of a number which carry an important contribution to the numerical value, starting with the first non-zero digit. For Example: 105.268 has 6 significant figures because every digit carry its own contribution towards the numerical value.

Whenever there is multiplication, the answer will contain the same number of significant figures as there are in the least precise numerical value.

Significant figures in 8.01  are 3 and that in 4.1 are 2.

So, the answer of these two numerical value will contain 2 significant figures.

8.01\times 4.1=32.841\approx 33

Hence, the correct option is Option D.

7 0
3 years ago
Read 2 more answers
How are the excited electrons from stage 1 used in stage 2 of photosynthesis? A. Splitting of water b. Carbon fixation c. Format
Gnom [1K]

Answer;

D. Formation of NADPH

Explanation;

During the process of photosynthesis light is converted to chemical energy.

During stage 1, Excited electrons that leave the chlorophyll pigments in stage 1 are used. Excited electrons are passed through proteins in the thylakoid membrane like a ball being passed from person to person. H2o molecules split and turn into H+ molecules and O2 gas, then pigments take the electrons from the split water molecules and release O2 into the atmosphere.

During stage 2; electrons from 1st cluster pump H+ ions into the thylakoid membrane through the hydrogen ion pump (protein membrane. Higher concentration of H+ ions inside the thylakoid membrane compared to outside. H+ ions diffuse out of the thylakoid throught the ATP synthase (enzyme in membrane). ATP synthase catalyzes the reaction ADP + P ---->ATP.

Stage 2; Excited electrons + H+ ions + NADP+= NADPH

6 0
3 years ago
How many atoms are in 2.5 moles of beryllium atoms?
Irina-Kira [14]
As we know that there are avogadro no. of atoms in 9 g of beryllium.
1 mole of beryllium = 6.02 * 10^23 atoms
so 2.5 mole= 6.02*10^23*2.5 i.e = <span>15.055 × 10^23 atoms </span>
8 0
2 years ago
What type of energy is described above
lozanna [386]

Forms

Type of energy Description

Radiant potential energy stored in the fields of propagated by electromagnetic radiation, including light

Rest potential energy due to an object's rest mass

Thermal kinetic energy of the microscopic motion of particles, a form of disordered equivalent of mechanical energy

11 more rows

6 0
3 years ago
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