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Kobotan [32]
4 years ago
10

How is calcium essential to your life?

Chemistry
2 answers:
Verizon [17]4 years ago
7 0

Answer:

Calcium is a mineral for humans which is really important.It helps you be healthy and be in shape(mostly your teeth and your bones).Calcium also keeps your blood and muscles moving and helps your nerves send messages from your brain to the rest of your body.Calcium helps you a lot and is essential to your life.

Hope that was helpful.Thank you!!!

ludmilkaskok [199]4 years ago
6 0

Answer  The body also needs calcium for muscles to move and for nerves to carry messages between the brain and every body part. In addition, calcium is used to help blood vessels move blood throughout the body and to help release hormones and enzymes that affect almost every function in the human body

Explanation:

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Use of chemical substance in our daily life their advantages and disadvantages​
vekshin1

Answer:

Explanation:

By observing chemical reactions, we are able to understand and explain how the natural world works. Chemical reactions turn food into fuel for your body, make fireworks explode, cause food to change when it is cooked, make soap remove grime, and much more.

3 0
3 years ago
How many grams and moles of gold are present in 8.09 x 10^28 atoms of gold?
Blizzard [7]

Answer:

Explanation:

how many grams and moles of gold are present in 8.09 x 10^28 atoms of gold?

there are 6.02 x 10^23 molecules or atoms in 1 mole

of a compound or element

8.09 x 10^28 /(6.02 x 10^23) = 1.34 x 10^5 moles of Au

1 mole of gold (see periodic table for #79) 197 g

so 1.34 x 10^5 moles of Au weigh

197 x 1.34 x 10^5 = 2.64 x 10^7 g

your little gold treasure is worth

Gold Price Per Gram $59.87 x 2.64 x 10^7=

$$$$ 1.58 x 10^9

=$ 1,580,000,000

4 0
2 years ago
For this reaction, C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O, the ∆H is –2200 kJ. If two moles of C3H8(g) reacted with excess oxygen,
algol13
<span> 1C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O, the ∆H is –2200 kJ

1mol </span>C3H8(g) ---- –2200 kJ
2mol C3H8(g)  ----2(–2200 kJ)=-4400kJ
4 0
3 years ago
El ejemplo más claro para definir una cadena de electricidad es una red de pesca, si fuera posible identificar una sola partícul
Lynna [10]

Answer:

<em>Leptón</em>

<em></em>

Explanation:

Lepton son partículas elementales de espín de medio entero (espín 1⁄2), y se sabe que no experimentan interacciones fuertes. Los leptones se clasifican en leptones cargados (los leptones similares a los electrones) y leptones neutros (conocidos como neutrinos). Un electrón es un leptón. Los leptones cargados pueden combinarse con otras partículas para formar átomos compuestos de partículas y positronio, mientras que los neutrinos rara vez interactúan con algo, lo que los hace raros de observar.

<em>Dado que la electricidad es el resultado del movimiento o flujo de electrones, la única partícula representativa de esta fuerza es el leptón.</em>

7 0
3 years ago
15 drops of ethanol from a medicine dropper weigh 0•60g, how many drops does it take from a dropper to dispense 1•0mL ethanol? T
creativ13 [48]

Answer:

20 drops of ethanol dispensed by dropper will be 1.0 mL ethanol.

Explanation:

Mass of 15 drops of ethanol = 0.60 g

Mass of 1 drop of an ethanol = \frac{0.60 g}{15}=0.04 g

Mass of 1.0 mL of ethanol = m

Volume of ethanol = 1.0 mL

Density of an ethanol = d = 0.80 g/ml

m = d\times V =0.80 g/mL\times 1.0 mL=0.80 g

Number of drops in 0.80 g of ethanol = x

x\times 0.04 g=0.80 g

x=\frac{0.80 g}{0.04g}=20

20 drops of ethanol dispensed by dropper will be 1.0 mL ethanol.

3 0
3 years ago
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